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Chemical Formulas and Composition Analysis Quiz

#1

What is the chemical formula for water?

H2O
Explanation

Water's chemical formula is H2O, indicating two hydrogen atoms bonded to one oxygen atom.

#2

Which of the following represents the chemical formula for sodium chloride?

NaCl
Explanation

The chemical formula for sodium chloride is NaCl, representing one sodium atom bonded to one chlorine atom.

#3

What is the chemical formula for methane?

CH4
Explanation

Methane's chemical formula is CH4, indicating one carbon atom bonded to four hydrogen atoms.

#4

Which chemical formula represents carbon dioxide?

CO2
Explanation

The chemical formula for carbon dioxide is CO2, representing one carbon atom bonded to two oxygen atoms.

#5

Which chemical formula represents hydrogen peroxide?

H2O2
Explanation

The chemical formula for hydrogen peroxide is H2O2, representing two hydrogen atoms bonded to two oxygen atoms.

#6

Which chemical formula represents sulfuric acid?

H2SO4
Explanation

The chemical formula for sulfuric acid is H2SO4, representing two hydrogen atoms, one sulfur atom, and four oxygen atoms.

#7

What is the chemical formula for table sugar?

C12H22O11
Explanation

Table sugar's chemical formula is C12H22O11, indicating twelve carbon atoms, twenty-two hydrogen atoms, and eleven oxygen atoms.

#8

What is the chemical formula for hydrochloric acid?

HCl
Explanation

Hydrochloric acid's chemical formula is HCl, indicating one hydrogen atom bonded to one chlorine atom.

#9

What is the chemical formula for acetic acid?

CH3COOH
Explanation

Acetic acid's chemical formula is CH3COOH, indicating two carbon atoms, four hydrogen atoms, and two oxygen atoms.

#10

What is the chemical formula for carbon monoxide?

CO
Explanation

Carbon monoxide's chemical formula is CO, indicating one carbon atom bonded to one oxygen atom.

#11

What is the chemical formula for nitric acid?

HNO3
Explanation

Nitric acid's chemical formula is HNO3, indicating one hydrogen atom, one nitrogen atom, and three oxygen atoms.

#12

Which chemical formula represents sodium hydroxide?

NaOH
Explanation

The chemical formula for sodium hydroxide is NaOH, representing one sodium atom bonded to one oxygen atom and one hydrogen atom.

#13

What is the chemical formula for ammonia?

NH3
Explanation

Ammonia's chemical formula is NH3, indicating one nitrogen atom bonded to three hydrogen atoms.

#14

What is the chemical formula for sulfuric acid?

H2SO4
Explanation

Sulfuric acid's chemical formula is H2SO4, indicating two hydrogen atoms, one sulfur atom, and four oxygen atoms.

#15

What is the chemical formula for sulfur dioxide?

SO2
Explanation

Sulfur dioxide's chemical formula is SO2, indicating one sulfur atom bonded to two oxygen atoms.

#16

What is the chemical formula for calcium carbonate?

CaCO3
Explanation

Calcium carbonate's chemical formula is CaCO3, indicating one calcium atom, one carbon atom, and three oxygen atoms.

#17

What is the chemical formula for potassium permanganate?

KMnO3
Explanation

Potassium permanganate's chemical formula is KMnO3, indicating one potassium atom, one manganese atom, and three oxygen atoms.

#18

What is the chemical formula for magnesium sulfate?

MgSO4
Explanation

Magnesium sulfate's chemical formula is MgSO4, indicating one magnesium atom, one sulfur atom, and four oxygen atoms.

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