1) What is the charge of a proton? a) Positive (+1) b) Negative (-1) c) Neutral (0) 2) What is the charge of an electron? a) positive (+1) b) negative (-1) c) neutral (0) 3) The first shell holds 2 electrons. How many electrons can the other shells hold? a) 2 b) 4 c) 8 4) How many protons are there in this sodium atom? a) 11 b) 23 c) 12 5) All atoms have the same number of protons and neutrons. True or false? a) True b) False 6) If Beryllium has 4 protons, how many electrons will it have to have no charge? a) 2 b) 3 c) 4 d) 5 7) If an ion has 9 positive protons and 11 negative electrons, what overall charge will it have? a) -2 b) 0 c) +2 8) What determines an atoms mass? a) protons b) neutrons c) protons and neutrons d) protons, neutrons, and electrons 9) What determines an atoms identity? a) protons b) neutrons c) nucleus d) electron shells 10) Both protons and neutrons are located in the nucleus. a) true b) false 11) Where are neutrons located? a) nucleus b) outer shell 12) Where are electrons located? a) nucleus b) outer shell 13) Atomic number is the same as - (select all that apply) a) atomic mass b) protons c) neutrons d) electrons 14) What is the charge of a neutron? a) positive b) negative c) neutral 15) If an atom has lost electrons what is this called? a) isotope b) cation c) anion d) neutrally charged 16) What subatomic particles is changed in an isotope? a) neutrons b) protons c) electrons 17) Oxygen - 16 and oxygen - 18 are different because a) one has more protons b) one has more electrons c) one has more neutrons 18) Oxygen has the atomic number 8, how many electrons does the ion O-2 have? a) 6 b) 8 c) 10 19) Lithium has the atomic number 3, how many electrons does the ion L+ have? a) 2 b) 3 c) 4 20) If Boron has the atomic number 5 and an atomic mass of 11. What is the atomic mass of the boron isotope with 8 neutrons in the neclues? a) 11 b) 8 c) 13

Lockhart: Atoms, Ions, Isotopes

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