1) How many H atoms does N bond with? a) 1 b) 2 c) 3 d) 4 2) How many H atoms does C bond with? a) 1 b) 2 c) 3 d) 4 3) The formula for ammonia is a) H2 b) H2O c) NH3 d) CH4 4) The formula for methane is a) H2 b) H2O c) NH3 d) CH4 5) Which is an element? a) H2 b) H2O c) NH3 d) CH4 6) Which substance burns? a) H2O b) NH3 c) CH4 7) Which is a compound? a) H2 b) O2 c) O3  d) N2 e) H2O 8) Which molecule would be best to make a perfume? a) hydrogen sulfide b) methanethiol c) butanethiol d) methyl benzoate

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