1) What is the charge of a proton? a) Positive b) Negative c) Neutral 2) What is the mass of a neutron? a) 0 b) 1 c) 2 3) What is the charge of an electron? a) Positive b) neutral c) negative 4) What does the atomic number mean? a) the number of protons b) the number of electrons c) the number of protons and neutrons 5) What does the atomic mass mean? a) the number of protons b) the number of electrons c) the number of protons and neutrons 6) How many electrons can go in the first shell? a) 1 b) 2 c) 8 7) How many electrons can go in the second shell to fill it? a) 1 b) 2 c) 8 8) What does the number of electrons in the outer shell tell us? a) Reactivity b) Group number c) Period number 9) How many elements in this compound - H2SO4 ? a) 2 b) 3 c) 4 d) 6 10) How many atoms in this compound - H2SO4 ? a) 2 b) 4 c) 6 d) 7

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