Chemical Formulas and Atomic Composition Quiz

Test your knowledge on chemical formulas and atomic composition with these stoichiometry questions. Find answers to water, methane, glucose, and more.

#1

What is the chemical formula for water?

H2O
CO2
NaCl
CH4
#2

How many hydrogen atoms are in one molecule of methane (CH4)?

1
2
3
4
#3

How many nitrogen atoms are there in one molecule of ammonia (NH3)?

1
2
3
4
#4

What is the chemical formula for hydrochloric acid?

HCl
H2SO4
NaOH
H2O
#5

What is the molecular formula for glucose?

C2H6O
C6H12O6
CO2
H2O
#6

How many oxygen atoms are in one molecule of sulfuric acid (H2SO4)?

1
2
3
4
#7

How many carbon atoms are present in one molecule of ethanol (C2H5OH)?

1
2
3
4
#8

What is the chemical formula for sodium carbonate?

Na2CO3
NaHCO3
NaCl
NaOH
#9

What is the chemical formula for ammonium phosphate?

NH4PO4
N2H3PO4
NH4HPO4
NH3PO4
#10

How many oxygen atoms are there in one molecule of sulfur dioxide (SO2)?

1
2
3
4
#11

What is the chemical formula for acetic acid?

CH4
C2H6
C2H4O2
C6H12O6
#12

What is the chemical formula for hydrogen peroxide?

H2O
H2O2
HO
H2O3

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