Atomic mass and atomic number worksheet key

• [DOC File]Atomic Structure Worksheet

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  The mass number is the total number of protons plus neutrons in the nucleus of an atom. Use the periodic table to help you complete the chart below. Remember to round the atomic mass to the nearest whole number to get the mass number if the number of neutrons is not given.

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• [DOC File]Accelerated Chemistry Chapter 3 Wksht # 1

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  atomic mass number 37 35 88 90 Periodic Table Box. 23Na+1 14N-3 17O-2 # protons 20 11 7 8 # neutrons 20 12 7 9 # electrons 18 10 10 10 atomic mass number 40 23 14 17 3. Calculate the average atomic mass if element X has two isotopes: 28X (mass = 27.98 amu, % abundance = 92.23 %), and 29X (mass = 28.98 amu, % abundance = 7.770 %). _

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• Honors Chemistry Worksheet – Atomic Structure

  The number of neutrons in an isotope may be determined by subtracting the number of protons (atomic number) from the mass number. #n0 = A - Z. If working with the element, the atomic mass may be rounded to a whole number and used as a mass number. 9. An atomic nucleus contains 6 protons and 6 neutrons. About the nucleus move 2 electrons in the ...

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• [DOC File]Chapters 2 & 3 Worksheet 3

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  Name Symbol Atomic number Mass number # of protons # of neutrons # of electrons Sodium 11 24 11 13 11 Nitrogen 7 14 7 7 7 Barium 56 135 56 79 56 Boron 5 11 5 6 5 Potassium 19 39 19 20 18 Chromium 24 52 24 28 21 Lithium 3 10 3 7 2 Nitrogen 7 14 7 7 10 Selenium 34 79 34 45 36 Write the name of the scientist responsible for each of the following ...

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• [DOC File]Chemistry

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  KEY Chemistry: Atomic Number and Mass Number. Complete the following chart and answer the questions below. [Atomic # = # Protons] P + N = Mass # Element. Name Atomic. Number Number of. Protons Number of. Neutrons Mass Number carbon 6. 6. 6. 12 oxygen 8 8. 8 16. hydrogen 1. 1. 0. 1 carbon. 6. 6 8. 14 hydrogen 1. 1. 2 3. nitrogen 7. 7. 7. 14 ...

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• [DOC File]Periodic Table

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  Choose the correct words from the list, then place the appropriate number in each blank. Word List: 1. actinide series 2. alkali metal 3. alkaline earth metal 4. anion. 5. atomic mass 6. atomic number 7. cation 8. family. 9. group 10. halogen 11. lanthanide series 12. metal. 13. …

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• [DOC File]Isotope Practice Worksheet

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  Element Symbol Atomic Number Number of electrons Number of Neutrons Mass number Nuclear symbol Atomic Mass Helium. 2 2 Ti 22 50 Ti - 50 73 73 108 Gallium. 31 39 13C. 6 226. 88Ra 83 83 127 Isotope Practice Worksheet Name: KEY. LT 3.1: Use the periodic table to identify and count subatomic particles within the atom.

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• [DOCX File]Protons, Neutrons, and Electrons Practice Worksheet

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  Feb 03, 2016 · The atomic mass is also different for every element, and also for isotopes of the same element. The atomic mass is equal to the number of protons that an element has plus the number of neutrons that an element has. This is because protons have a mass of approximately 1 amu (atomic mass unit) and neutrons have a mass of approximately 1 amu.

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• [DOC File]Atomic Notation Worksheet

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  Atomic Notation Worksheet. element atomic notation atomic number mass number number of protons number of. neutrons number of electrons hydrogen 11H hydrogen 21 H fluorine 9 19 sulfur 16 17 16 34 36 29 168O 29 34 6 14 14 7 15 7 Uranium 238 234 92 2 2 2 1

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• [DOC File]Isotope Practice Worksheet

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  Calculate the average atomic mass of this Potassium sample. The three Potassium isotopes have atomic masses and percent compositions of 39 amu (64.8%), 40 amu (18.6%), and 41 amu (16.6%). Complete the following chart: Element Symbol Atomic Number Number of electrons Number of Neutrons Mass number Isotope Notation Atomic Mass Helium. 2 2 Ti 22 ...

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