1) How many oxygen atoms? a) 2 b) 3 c) 5 2) What is the ratio of Na : O atoms in this molecule? a) 1 : 2 b) 1 : 1 c) 2 : 1 3) What is the ratio of N : H atoms in this molecule? a) 1 : 1 b) 1 : 3 c) 3 : 1 4) What is the total number of atoms in this molecule? a) 3 b) 5 c) 6 5) What does the term that refers to number 4? a) Symbol b) Subscript c) Chemical formula 6) How many elements in Methane? a) 5 b) 2 c) 0 7) How many atoms in this compound a) 3 b) 9 c) 7 8) Is this a balanced equation? a) Yes b) No 9) Is this a balanced equation? a) Yes b) No

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