1) How many elements are in this formula: H2SO4 a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 2) How many elements are in this formula: CaCO3 a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 3) How many elements are in this formula: HF a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 4) How many atoms are in this formula: HF a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 5) How many atoms of Helium are in this formula: HF a) 1 b) 2 c) 3 d) 4 e) 5 f) 0 6) How many atoms are in this formula: CaCO3 a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 7) How many atoms of calcium are in this formula: CaCO3 a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 8) How many atoms of carbon are in this formula: CaCO3 a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 9) How many atoms of oxygen are in this formula: CaCO3 a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 10) How many atoms of sulfur are in this formula: H2SO4 a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 11) How many atoms are in this formula: H2SO4 a) 2 b) 3 c) 4 d) 5 e) 6 f) 7 12) How many atoms of hydrogen are in this formula: H2SO4 a) 2 b) 3 c) 4 d) 5 e) 6 f) 7

Counting Atoms and Elements in Compounds

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