1) Which element is shown? a) carbon b) hydrogen c) oxygen d) nitrogen e) sulfur 2) Which element is shown? a) nitrogen b) hydrogen c) sulfur d) carbon e) oxygen 3) Which element is shown? a) carbon b) oxygen c) nitrogen d) sulfur e) hydrogen 4) Which element is shown? a) carbon b) oxygen c) sulfur d) hydrogen e) nitrogen 5) Which element is shown? a) sulfur b) nitrogen c) oxygen d) hydrogen e) phosphorus 6) Which element is shown? a) carbon b) hydrogen c) nitrogen d) sulfur e) oxygen 7) What is the atomic number of carbon? a) 1 b) 6 c) 7 d) 8 e) 15 f) 16 8) What is the atomic number of ? a) 1 b) 6 c) 7 d) 8 e) 15 f) 16 9) What is the atomic number of oxygen? a) 1 b) 6 c) 7 d) 8 e) 15 f) 16 10) What is the atomic number of nitrogen? a) 1 b) 6 c) 7 d) 8 e) 15 f) 16 11) What is the atomic number of phosphorus? a) 1 b) 6 c) 7 d) 8 e) 15 f) 16 12) What is the atomic number of sulfur? a) 1 b) 6 c) 7 d) 8 e) 15 f) 16 13) What is the atomic mass of carbon? a) 12.011 b) 1.008 c) 15.9994 d) 14.007 e) 30.9738 f) 32.066 14) What is the atomic mass of hydrogen? a) 12.011 b) 1.008 c) 15.9994 d) 14.007 e) 30.9738 f) 32.066 15) What is the atomic mass of oxygen? a) 12.011 b) 1.008 c) 15.9994 d) 14.007 e) 30.9738 f) 32.066 16) What is the atomic mass of nitrogen? a) 12.011 b) 1.008 c) 15.9994 d) 14.0067 e) 30.9738 f) 32.066 17) What is the atomic mass of phosphorus? a) 12.011 b) 1.008 c) 15.9994 d) 14.007 e) 30.974 f) 32.066 18) What is the atomic mass of sulfur? a) 12.011 b) 1.008 c) 15.9994 d) 14.007 e) 30.9738 f) 32.066

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