Atomic Structure Chemistry

Name_______________________________________________ Period_________ Atomic Structure Worksheet Label the parts of an atom on the diagram below. 4. What type of charge does a proton have? Positive (+1) 5. What type of charge does a neutron have? Neutral (0) Electron 6. What type of charge does an electron have? Negative (-1) 7. Which two subatomic particles are located in the nucleus of an atom? Neutron Proton Protons and neutrons 8. If an atom has 35 protons in the nucleus, how many electrons will it have orbiting the nucleus? 35 9. What is the atomic number of the atom in the diagram above? 5 10. What is the atomic mass/mass number of the atom in the diagram above? (11+11=22) *protons and neutrons added together) 22 is the atomic mass/mass number 11. How many protons are in the nucleus of an atom with an atomic number of 15? 15 *number of protons is the same as the atomic number 12. How many electrons are in the nucleus of an atom with an atomic number of 20? 20 13. How many neutrons are in the nucleus of an atom with an atomic number of 25? (use Periodic Table for mass) 30 Neutrons. atomic mass: 54.938 ~ 55 atomic number: 25.....55-25=30 14. What is the mass number of an atom with 3 protons, 4 neutrons, and 3 electrons? Mass number= 6.94. (Li-Lithium has an atomic number of 3 which means it has 3 protons. 15. How many neutrons are in the nucleus of an atom that has an atomic mass of 36 and an atomic number of 25? Neutrons= 11 (atomic mass: 36 - 25 :atomic number) Bohr Model Drawing (25 points) Draw a Bohr model of an oxygen atom in the space below. Be sure to place the electrons in the correct orbitals and to fill out the key for the subatomic particles. Key Protons: Neutrons: Electrons: 8 (Same as atomic number) 8 (Atomic mass#:16-8:Atomic#) 8 (Same as protons) Nucleus The Atoms Family Atomic Math Challenge Atomic Number Atomic number equals the number of Element symbol electrons protons __________ or __________ Element name Atomic mass equals the number of Atomic mass number neutrons protons __________ + __________ Zn Lithium Oxygen 8 30 Atomic # = ______ 3 Atomic # = ______ 65 Atomic Mass = __________ 7 Atomic Mass = __________ 30 # of Protons = ________ # of Protons = ________ # of Neutrons = ________ 35 # of Neutrons = ________ # of Neutrons = ________ 8 # of Electrons = ________ 30 # of Electrons = ________ 3 # of Electrons = ________ Atomic # = ______ 16 Atomic Mass = __________ 8 # of Protons = ________ 8 Si 3 4 Br Boron 5 Atomic # = ______ 35 Atomic # = ______ 11 Atomic Mass = __________ 80 Atomic Mass = __________ 14 # of Protons = ________ 5 # of Protons = ________ # of Protons = ________ 14 # of Neutrons = ________ # of Neutrons = ________ 45 # of Neutrons = ________ 14 # of Electrons = ________ 5 # of Electrons = ________ 35 # of Electrons = ________ 14 Atomic # = ______ 28 Atomic Mass = __________ 6 35 I Manganese Sulfur 16 Atomic # = ______ 32 Atomic Mass = __________ 53 Atomic # = ______ 127 25 Atomic # = ______ 55 Atomic Mass = __________ Atomic Mass = __________ 16 # of Protons = ________ 53 # of Protons = ________ # of Protons = ________ 16 # of Neutrons = ________ 74 # of Neutrons = ________ # of Neutrons = ________ 16 # of Electrons = ________ 53 # of Electrons = ________ 25 30 25 # of Electrons = ________ Ar Magnesium Potassium 12 Atomic # = ______ 24 Atomic Mass = __________ 18 Atomic # = ______ 19 Atomic # = ______ 40 Atomic Mass = __________ Atomic Mass = __________ 18 29 # of Protons = ________ 19 # of Protons = ________ # of Neutrons = ________ 22 # of Neutrons = ________ # of Neutrons = ________ 12 # of Electrons = ________ # of Electrons = ________ 12 # of Protons = ________ 12 18 Au 20 19 # of Electrons = ________ F Hydrogen 79 Atomic # = ______ 197 Atomic Mass = __________ 9 1 Atomic # = ______ Atomic # = ______ 1 Atomic Mass = __________ Atomic Mass = __________ 1 79 # of Protons = ________ # of Protons = ________ 118 # of Neutrons = ________ # of Neutrons = ________ 79 # of Electrons = ________ # of Electrons = ________ 0 1 19 9 # of Protons = ________ 10 # of Neutrons = ________ 9 # of Electrons = ________