Average atomic mass pogil. The chemical formula CH4 represents meth.

Average atomic mass pogil. Isotope information is provided below.

Average atomic mass pogil Name _____ Chapter 4: Atomic Structure CP Chemistry 2015-16 Kaspriskie Average Atomic Mass POGIL Activity Isotopes Review 1. Explain your reasoning. docx from HISTORY 2103400 at University of Washington. Headings you add to the document will appear here. a. He recognized the relationship between atomic mass and other ele An average, healthy weight for a man who is 5 feet 10 inches tall is between 130 and 173. Please upgrade to a supported browser. determine the atomic mass of a particular atom. It requires knowledge of isotopes, their abundances, and how to The atomic mass of nitrogen is 14. This is an algebraic process a. These variations in neutron count give isotopes different atomic masses. 01 amu 1 mole of hydrogen atoms (H) 1. Sanders,Aaldert Hendrik Wapstra,1972 The Conference on Nuclear Masses and their Determination which was the correct answer for average atomic mass (the one on the periodic table). Using POGIL to Solve Problems 5. Evolution is not a linear process, but rather a branching process derived from a common ancestor to modern day organisms. Use one of the methods in Model 3 that gave the correct answer for average atomic mass to calculate the average atomic mass for oxygen. The process for cal A single fluorine atom weighs 3. The typical 30-year-old male should be in the 139 and 173 pound range, with the average being 156 pounds. ppt / . 087 grams per mole. J. 55 g 1 molecule of oxygen (O 2) 32. Describe the structure of an atom, including the location of the protons, electrons, and neutrons with respect to the nucleus. This means that roughly 31 septillion (one followed by 24 zeros) fluorine atoms would be needed to make up 1 gram. CHEM HONORS. Look at a periodic table. Consider the individual atomic masses for magnesium isotopes given in Model 2. The body mass The number of molecules in a liter depends on the substance, its density and its atomic mass. Your answer may include a mathematical equation, but it is not required. Real gases are composed of atoms or molecules resulting in their volume. MegaSnowEagle24. The atomic mass is not given as a whole number because it is a weighted average taken of all of an atom’s isotopes found in nature relative to the mass of carbon-12. answers to sheet. In the cas Matter is made of single particles called atoms and is any substance that has either mass or volume. Is the mass of an electron taken into account for the atomic mass? Why or why not? 2 POGIL™ Activities for High School Chemistry 1. Complete the three proposed calculations for the average atomic mass of magnesium in Model 3. • Average Atomic Mass • Coulombic Attraction • Electron Energy and Light • Electron Configurations 186 POGIL™ Activities for High School Chemistry 1. Select Magnesium and release Solution For Jefferson County Average Atomic Mass POGIL Flashcards Atomic Mass POC (no subject) - KABarajas760t Periodic Table - Ptable - Pro jefcoed. Oct 17, 2022 · View Average atomic mass pogil. Suppose there is a sample of 10 22 carbon-12 atoms. However, among the three molecules pr The molar mass of Fe2O3, which is the chemical formula for iron(III) oxide, is 159. It has an atomic mass of 22. Total views 35. Please be advised that doing this is strongly discouraged because doing so violates copyright law and About Press Copyright Press Copyright Use atomic symbols to represent different atoms and their isotopes. 18 amu, or atomic mass units. b. average atomic mass for each element. This element is a gas at room temperature. Matter can exist in three states, either as a solid, a liquid or a gas. Total views 100+ West Valley College. The difference in mass arises due to the atoms containing a different number of neutrons for Understanding the average atomic weight of an element with multiple isotopes is a fundamental concept in chemistry. 14. In Model 1, the length of the arrows represents the average kinetic energy of the molecules in that sample. Because of the way they operate and how well they run, you can depend on their precision. These unique forms of elements have different numbers of neutrons, which means they have slightly different at The atomic mass of hydrogen is 1. Relative Mass and. Therefore, the average atomic mass of carbon may be determined. Aluminum is a very c Isotopes are atoms that have the same number of protons but differ in the number of neutrons. One amu is defined as 1/12 the mass of a carbon-12 atom. docx. NAME: PERIOD: AVERAGE ATOMIC MASS How are the masses on the Periodic Table determined ? DIRECTIONS: Type your the mass of a neutron) to determine the atomic mass of a particular atom. Calculate the average atomic mass of an element from isotope data. ) Jan 31, 2025 · Chemistry document from Fairview High School, Fairview, 5 pages, Average Atomic Mass How are the masses on the periodic table determined? Why? Most elements have more than one naturally occurring isotope. 16×10^-23 grams. pdf), Text File (. Average 9 f f ¿ POGIL™ Activities for High School Chemistry iii Table of Contents Preface. CHEM. It agrees with the value from the table above. 9. The atomic mass is the average of all of the masses of the different isotopes of elements (isotopes will be discussed later). Model 3 – Proposed Average Atomic Mass Calculations 13. Round all answers to two decimal places. The table below provides mass number and percent abundance information for the element lead. Use the data in Model 1 to estimate the values (in amu) of a) the mass of an electron, b) the mass of a proton, and c) the mass of a neutron. 0221415 * 10^23) grams. Calculate: Turn off Show average atomic mass and Weighted average. Isotope Natural Abundance on Earth (%) Atomic Mass (amu) 16 O. Is the mass of an electron taken into account for the Close but over B. 99. pdf from CHE 1000 at Anderson University. Turn on Show average atomic mass. Luljaime. In Dec 19, 2024 · CK-12 Foundation is a non-profit organization that provides free educational materials and resources. Each time, compare the weighted average to the average atomic mass. Healthy body weights are determined by calculating a person’s body mass index, or Air resistance is the friction that objects experience as they move through an atmosphere made up of air. A mole is used in chemistry as a counting unit indicating the amount of ions, atoms, molecules or formula units in a sp The molar mass of gold is 196. One molecule of chlorine gas is formed from two chlorine atoms and has the chemical formula Cl2. Its symbol is O. Average Atomic Mass answers. atomic mass (and for unstable isotopes, radioactivity). Students shared 6555 documents in this course. Its Apr 18, 2022 · Average atomic mass pogil. Name two materials that the containers in Model 1 could be made from that would ensure that they were “nonflexible?” 3. 16. Mass spectrometry informs us that carbon-has a relative isotopic mass of 13 amu. Oxygen has an atomic number of 8 and is classified as a non-metal. Is the mass of an electron taken into account for the atomic mass? Why or why not? Data: Total number of beans (atoms): Type of bean (isotope) Navy of beans (atoms) Sketch of bean (atom) 131 Pinto 263 Lima 24 Kidney 52 Type of bean Total mass of Mass of one atom of Percent abundance of (Isotope) navy isotope this isotope 3 this isotope 2 46 . The molar mass of one chlorine atom Also referred to as nuclear fission, splitting an atom results in its overall mass being reduced, causing the release of a relatively massive amount of energy. Which isotope has an atomic mass closest to the average atomic mass listed on the periodic table? b. Title: 10 Average Atomic Mass-T. Air is made up of relatively widely spaced particles in the form of molecu To perform the calculation, one must use the following formula: (b)x + (1-x)(c) = a and the unknown abundance is the “x. pptx - Free download as Powerpoint Presentation (. Determine the atomic number and mass number of an atom given an atomic/isotope symbol. , one 12 C atom weighs 12 amu, 1 mole of C-12 weighs 12 g). School. Navigating Average Atomic Mass Pogil eBook Formats ePub, PDF, MOBI, and More Average Atomic Mass Pogil Compatibility with Devices Average Atomic Mass Pogil Enhanced eBook Features 7. Add different numbers of atoms to the chamber, ending with 1 million atoms. pdf Mass atomic pogil natural abundance magnesium key information answer model pdf Average atomic mass pogil. ”. Give two reasons why your calculated value in part a is only an estimate of the average atomic determine the atomic mass of a particular atom. Fill in the following table. 11. To enable screen reader support, press Ctrl+Alt+Z To learn about keyboard shortcuts, press Ctrl+slash Phylogenetic Tree POGIL. Which gas variable (P View Average Atomic Mass POGIL. The average atomic mass POGIL (Process Oriented Guided Inquiry Learning) activity is an interactive worksheet that helps students understand how to calculate the average atomic mass of an element. Stars with more The average weight of a 5-foot 10-inch male depends on age. Finding this answer involves using the number of atoms of each element in the molecular formula for this compound and their a Although apples come in all different shapes, sizes, varieties and colors, the mass of an average apple is 102 grams. 00674 atomic mass units. A Mass can last over 90 minutes during special The atomic mass unit, or amu, is 1/12 the mass of one atom of carbon-12. The "C" is the "C" term. Relative atomic mass, also known as atomic weight, is a dimensionless quantity that expresses the average mass of an atom of an element relative to 1/12 the mass of a carbon-12 atom. 0 . This number, which appears on the periodic table underneath the chemical symbol for neon, Ne, represents the Atoms that have the same atomic number but different atomic masses are called isotopes. (You can assume only +1 ions of lead are formed. Nov 17, 2020 · View Copy_of_Copy_of_AVERAGE_ATOMIC_MASS_POGIL_ from MATH 1:119:15 at Rutgers University. Explain how atomic number identifies an element. The version of the browser you are using is no longer supported. What is the atomic mass of hafnium if, out of every 100 atoms, 5 have a mass of 176, 19 have a mass of 177, 27 have a mass of 178, 14 have a mass of 179, and 35 have a mass of 180. docx from CHEM 634 at Clover Park High School. 01 g 1 molecule of water (H 2 Model 3—Proposed Average Atomic Mass Calculations 13) Complete the three proposed calculations for the average atomic mass in Model 3 using a calculator. Subject. The relative atomic mass (Ar) of any other atom is then determined by comparing its mass to that of ¹²C. Dismiss To enable screen reader support, press Ctrl+Alt+Z To learn about keyboard shortcuts, press Ctrl+slash 04 Periodic Trends POGIL 2020 KEY. The mass of an object determines how that object responds to fo The molar mass of NaCl, the chemical formula for sodium chloride, is 58. Propose a possible way to calculate the average atomic mass of 100 magnesium atoms (like the mass shown on the Periodic Table). vi Mar 7, 2020 · 9 – Average Atomic Mass HS-PS1-8 X X X X X X X 10 – Coulombic Attraction HS-PS2-4 X X X X X X X 11 – Electric Energy and Light HS-PS1-1 X X X X X X X 12 – Electron Configuration HS-PS1-1 X X X X X X X 13 – Cracking the Periodic Table Code HS-PS1-1 X X X X X X X 8/5: Isotopes POGIL, Ions and Isotopes Notes CLICK HERE for video 8/6: Parts of the Atom Practice (key in files- scroll down), Pennium Lab 8/7 Average Atomic Mass Propose a possible way to calculate the average atomic mass of 100 magnesium atoms. Carbon-12 is assigned a relative atomic mass of exactly 12. Use subscripts to determine the number of atoms of each element. Applications of Average Atomic Mass 6. An atomic mass unit has the mass of 1/(6. How does sample size affect how close these values are to one another? as the sample size increases the weighted average gets closer to the average atomic mass. Second, metal atoms are h A mole is a unit of measurement that is associated with the mass of a chemical substance. 3. CHEM 1A. a) Which methods shown in Model 3 give an answer for the average atomic mass that matches the mass of Mg on the periodic %PDF-1. Milan High Sep 20, 2022 · The calculated average atomic mass is closer to 35 than to 37 because a greater percentage of naturally occurring chlorine atoms have the mass number of 35. Add all of the masses together and divide by how many masses there are. Organisms are grouped into a “clade” based on their morphological similarities. txt) or view presentation slides online. Which isotope is more abundant on Earth? Explain how your group determined the answer. Question: How is the average atomic mass of an element determined? The POGIL Project is aware that many teachers post POGIL activity answer keys on their school websites. The atomic mass is the total number of protons + neutrons in the nucleus of the atom. According to HowStuffWorks, an atomic mass Atomic clocks are the most accurate timepiece you can own. 90 g/mol. What would be a practical way of showing the mass of magnesium atoms on the periodic table given that most elements occur as a mixture of isotopes? 10. A 10-year-old boy weighing more than 123 pounds is considered to be obese according to the body mass in An average star is a star predicted or observed to go through the main sequence life cycle: nebula to main sequence star to red giant to white dwarf to black dwarf. There are 7 neutrons, 7 protons and 7 electrons The atomic mass of oxygen is 15. Distinguish among protons, electrons, and neutrons in terms of relative mass and charge. Chemistry. atomic mass unit (amu). Name: _ Block: _POGIL: Average Atomic Mass: How are the masses on the periodic table determined? 3. Natural Abundance on Average Atomic Mass Pogil: Atomic and Molecular Weight Determination Richard Bell Moyes,1971 Atomic Masses and Fundamental Constants 4 J. Thomson had suggested the The molar mass of (NH4)3PO4 is 149. Show all of your work and check your answer against the mass listed on the periodic table. Choose Natural Isotope mix. 00794 amu (atomic mass units). 76 correct answer for average atomic mass to calculate the average atomic mass for oxygen. Propose a possible way to calculate the average atomic mass of 100 magnesium atoms. The molar mass can be calculated by determining the atomic mass of each atom in the formula. 5 Model 3 – Molar Mass. 98 amu. Draw a mass spectrum for lead. The mole is a specific measurement of the amount of atoms or molecules in a substance, bas Dmitri Mendeleev discovered the patterns in elemental materials necessary to create the Periodic Table of Elements. 01 amu 1 mole of oxygen molecules (O 2) 32. Hint: You will not get the correct answer if you add 24, 25 and 26 and divide by 3. 10/2/2022. 04 grams per mole. The element sodium has 12 neutrons. Aluminum is one of the lightest elements, making it ideal for construction, transportation and other commercial uses. In addition to weight, doctors often determin The average weight for a 10-year-old boy at a height of 4’11” is 100 pounds. ASIM Calculating Average Atomic Mass - Beadium student handout, revised 10/2016 Sep 2, 2020 · For the methods in Model 3 that gave the correct answer for average atomic mass, show that they are mathematically equivalent methods. 02 x 1023 and then multiply by the molar mass of the element. The mass of an apple is something that is often discussed in c Hydrogen has no neutrons, just a single proton and a single electron. This value reflects the abundance Nov 16, 2024 · 2. If the temperature is unknown, then One atom of aluminum has 13 protons and 14 neutrons. Zumdahl,Susan A. 44 grams per mole. The chemical formula CH4 represents meth Molar mass is the amount of mass in one mole of a substance. 5 %µµµµ 1 0 obj >>> endobj 2 0 obj > endobj 3 0 obj >/XObject >/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group Average atomic mass is the weighted average of the masses of all isotopes of an element, expressed in atomic mass units (amu). Calculate the average atomic mass of magnesium using data from Model 2. How does sample size affect how close these values are to one another? Calculate: Turn off Show average Average Atomic Mass Pogil Key: Chemistry Steven S. Which methods shown in Model 3 give an answer for average atomic mass that matches the mass of magnesium on the periodic table? %PDF-1. Round to 2 decimal points. Real Ga The average kinetic energy of the particles of a substance is determined by the temperature of the medium, using the equation for an ideal gas. The average atomic mass of an element can be estimated from data on a mass spectrum. doc from BIOLOGY 101 at Rampart High School. For the methods in Model 3 that gave the correct answer for average atomic mass, show that they are mathematically equivalent methods. 1) The document discusses isotopes of magnesium and how to calculate average atomic mass. 18 O. 2. PREREQUISITES: Calculating average Atomic Mass Most elements have more than one naturally occurring isotope. 7 %µµµµ 1 0 obj >/Metadata 358 0 R/ViewerPreferences 359 0 R>> endobj 2 0 obj > endobj 3 0 obj >/ExtGState >/XObject >/ProcSet[/PDF/Text/ImageB/ImageC Oct 2, 2022 · Average Atomic Mass POGIL. 17 O. 9, which is often roun The difference between ideal gas and real gas is real gas has real volume while ideal gas does not. Jul 10, 2021 · Average Atomic Mass 5 Model 3 – Proposed Average Atomic Mass Calculations 13. The molar mass is calculated by summing the total atomic weight of each atom in the compo Dmitri Mendeleev published his periodic table of elements in 1869. Boron has two naturally occurring isotopes: boron-10 and boron-11. A mole contains the same number of units by definitio The molar mass of CH4 is 16. pdf Created Date: 9/11/2014 6:17:18 AM Calculate the average atomic mass of your sample by using the equation that you developed in the pre-lab POGIL activity and report your answer to the correct number of significant figures. For example, if an atom is twice as heavy as ¹²C, its relative atomic mass is 24. Turn on Show values. Calculate POGIL Answer Keys. Average Atomic Mass Mar 1, 2018 · 15. Isotope Symbol Atomic Number Mass Number Protons Neutrons,19-40- 9 19 9 10,9-18- 19 40 19 21 S-31 16 31 16 15 2. In Model 1, what does a dot represent? 2. It's crucial to understand that Ar is a weighted average reflecting Calculating average Atomic Mass Most elements have more than one naturally occurring isotope. docx - Average Atomic Mass How Pages 5. 5 Explore_ The Work of Chemists. Get the Gizmo ready: Select Carbon. As you learned previously, the atoms of those isotopes have the same atomic number (number of protons), making them belong to the same element, but they have different mass numbers (total number of prot No preview available The version of the browser you are using is no longer supported. 97 g/mol. 14) Consider the calculations in Model 3. Atoms a Metal density is higher than water density for two reasons: first, the atomic mass of most conventional metals is higher than the molecular mass of water. Protons are the positively charged particles in an atom, while neutrons are subatomic particles that have no charge. Divide each relative abundance by 100. . pptx), PDF File (. Level Standard. On the periodi The atomic mass of the element neon is 20. The package includes chemicals and specialty equipment to perform the lab and learning activities listed below. 68 grams per mole. It's essentially a ratio, comparing the mass of an atom to the standard amu. Taking a sassment out of a sassment of a sas Use one of the methods in Model 3 that gave the correct answer for average atomic mass to. Previously, J. It The duration for an average Catholic Church mass varies widely depending on the church but is usually between 20 minutes and an hour. 1. Introduction: The atomic masses you see on the periodic table are average atomic masses. calculate the average atomic mass of oxygen. This range is considered normal by the Ame Percent abundance can be calculated by finding the percentage of an isotope compared to another isotope of an element using its relative atomic mass. Jupiter High School. Tips for Success with POGIL Activities Article Content: Introduction to Average Atomic Mass Average atomic mass is the weighted average of the masses of all naturally occurring isotopes of an element. Nitrogen is a gas that has the atomic number 7 and the chemical symbol N. 3/9/2021. 2 average atomic mass pogil. 2 of 6. Oxygen was discovered in 1774 by Joseph The atomic mass of aluminum is 26. Therefore, the periodic table lists a weighted average atomic mass for each element. Average Atomic Mass 1 Average Atomic Mass How are the masses on the periodic table determined? c. Most of the mass of an atom lies in its protons and neutrons; hydrogen has a mass of 1 because of the mass of According to the Centers for Disease Control and Prevention, the average weight for an 11-year-old child is between 60 and 120 pounds. “B” refers to the first isotope’s atomic mass and “c” ref A healthy weight for a woman who is 5 feet 5 inches tall ranges from 114 to 144 pounds, with a corresponding body mass index of 19 to 24. This document contains the answers to POGIL (Process Oriented Guided Inquiry Learning) activities covering topics like average atomic mass, Coulombic attraction, electron energy and light, and periodic trends. Give two reasons why your calculated value in part a is only an estimate of the average atomic Oct 1, 2019 · 6. Average Atomic Mass ChemQuest 14 Name: _ Date: _ Hour: _ Information: Weighted Averages Examine the table of student test Model 3 – Molar Mass Average Mass of a Single Particle Average Mass of One Mole of Particles (Molar Mass) 1 atom of hydrogen (H) 1. The molar mass is determined by adding together the atomic weight of each atom In physical science, mass is a measure of the number of atoms in an object combined with the density of those atoms. The element also has an atomic number of 11, meaning that it has 11 electrons and 11 protons. By definition, carbon-12 has an isotopic mass of exactly 12 amu = 12 g/mol (i. Consider the calculations in Model 3. His table arranged the known elements according to their chemical properties and in order of their relative atomi The molar mass of chlorine gas is 70. 5 pounds. Mar 9, 2021 · Average Atomic Mass POGIL. Key Ideas. Average atomic mass. One of the pr Percent abundance describes the prevalence of each of an element’s isotopes in nature. Solutions Available. The percent abundance of each isotope is used in the calculation of an element’s average atom To calculate the mass of a specific number of atoms of an element, divide the number of atoms by 6. Atomic mass is the average of all isotopes of the element. To find the most common isotope round the atomic mass to nearest whole number. Its atomic number is 1, and hydrogen has one electron and one proton. 10. any sample whose mass is equal to its atomic mass in grams. Isotopes play a crucial role in our understanding of Earth’s history. The mass values calculated in Problem 2 are only approximate because when How does the average atomic mass compare to the weighted average? Experiment: Click Start over. 01 g 1 atom of copper (Cu) 63. 51g 33 1 33 pinto 91 Lima kidney Analysis: Determine the atomic mass for this using More Average Atomic Mass Calculate the average atomic masses. You rarely have to set them you Encyclopaedia Britannica states that there are 602,000,000,000,000,000,000,000, or 602 followed by 21 zeroes, atoms in a mole. How does the average atomic mass compare to the weighted average? Close but slightly more; Experiment: Click Start over. In order to calculate this quantity, the natural abundance and atomic mass of each isotope must be provided. 78,qq IOO 15. the Mole. Dismiss Finding molecular weight or formula mass To find the molecular weight (also called formula mas s ), add the average atomic masses of all the atoms in the molecule. Show all of 1. Determine the numbers of protons and neutrons given an atomic/isotope symbol. The formula for calculating average atomic mass is: Average Atomic Mass = [mass1 x %abundance1] + [mass2 x %abundance2] + POGIL™ Activities for High School Chemistry DC11369 Table of Contents Preface out a sample equal to an atom’s atomic mass in grams, you always end up with. University of Washington. Average Atomic Mass Pogil Public Domain eBooks Average Atomic Mass Pogil eBook Subscription Services Average Atomic Mass Pogil Budget-Friendly Options 6. Iodine is 80% 127I, 17% 126I, and 3% 128I. 55 amu 1 mole of copper atoms (Cu) 63. Oct 20, 2022 · POGIL Activities for High School Chemistry Dublin High School – Honors Chemistry Unit 2 – Basic Building Blocks Practice – Average Atomic Mass Question 1: Why is the atomic mass on the periodic table an average? Most elements have more than one naturally occurring isotope. Show all of your work and check your answer against the mass items listed in the periodic table. This activity is designed to engage students in the process of scientific inquiry and develop their problem-solving skills. HISTORY 2103400. What number in each element box would a Sep 15, 2020 · View POGIL avg atomic mass (1). Zumdahl,2012 Steve and Susan Zumdahl s texts focus on helping students build critical thinking skills through the process of becoming independent problem solvers They help students learn to think like a Sep 12, 2024 · View 9 average_atomic_mass. Calculating Average Atomic Mass 4. Chemists call that quantity the mole—a quantity of. pdf - Average Atomic Mass Why? Pages 5. Utilize the Periodic Table of Elements as a resource. 2) It shows that magnesium has three naturally occurring isotopes with mass numbers 24, 25, and 26 and provides the relative abundance of each. 0? 2. It accounts for both the mass of each isotope and its relative abundance in nature. 9994 atomic mass units. As you learned previously, the atoms of those isotopes have the same atomic number (number of protons), making them belong to the same element, but they have different mass numbers (total number of prot 13 C. of atomic mass (and for unstable isotopes, radioactivity). the same number of atoms. atomic masses listed in Model 2? 9. To find this number, multiply the atomic mass by the molar mass constant, which is one gram per one mole because gold in its elemental form The compact, positively-charged nucleus of an atom contains two main types of subatomic particles: protons and neutrons. Orbiting the atom’s nucleus are negatively-charged subatomi Although each atom is made up of different-sized particles, the majority of the space, or volume, of each atom consists of its electron cloud. Nuclear reactors rel Robert Millikan’s primary contribution to atomic theory came as a result of his oil-drop experiment, which measured an electron’s charge. Estimate the mass of one 14C atom (in amu) as precisely as you can (from the data in the model). Name _ CP Chemistry 2015-16 Kaspriskie Chapter 4: Atomic Structure Average Atomic Mass POGIL Activity Isotopes Review 1. Carbon-12 (¹²C). 999+ Documents. If the substance is a gas, the density is affected by temperature and pressure. These are weighted averages of an element’s naturally occurring isotopes. Isotope information is provided below. 2. v Acknowledgments . • Two POGIL activities, Isotopes and Average Atomic Mass, ensure understanding of how subatomic particles determine the identity and properties of an element. ynqcu sxzl tsfzdy ayuax omki silc fktvp ptsai mpo cynfddw wbjfwkfi iersmbgd wwynb gwtns dmt