Quiz about Chemical Compounds

Question 1

What is the chemical formula for this structure?

Accepted Answer

C₆H₁₂O₆

Answer

CH4

Answer

Fe2O3

Answer

NaCl

Question 2

Which compound has this structure?

Accepted Answer

Ammonia

Answer

Nitrate

Answer

Diatomic Nitrogen

Answer

Water

Question 3

What is the chemical formula for this structure?

Accepted Answer

NO3

Answer

NaCl

Answer

CaCl

Answer

NH4

Question 4

How many atoms of Hydrogen are in this compound?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 5

Which of the following is an example of a compound?

Accepted Answer

Water

Answer

Oxygen

Answer

Hydrogen

Answer

Nitrogen

Question 6

This picture represents which of the following?

Accepted Answer

compound

Answer

element

Question 7

What is the molecular structure of table salt?

Accepted Answer

NaCl

Answer

Sandwich

Answer

Molecular who?

Answer

H2O

Question 8

This picture represents which of the following?

Accepted Answer

compound

Answer

element

Question 9

What is the main difference between a compound and a mixture?

Accepted Answer

Compounds are chemically combined, mixtures are physically combined

Answer

Compounds are always solids, mixtures are always liquids

Answer

Compounds can be separated by physical means, mixtures cannot

Answer

Compounds are made of elements, mixtures are made of compounds

Question 10

The number of subscripts in a chemical formula tells us ______.

Accepted Answer

the number of atoms of a specific element in the chemical formula

Answer

the number of compounds in the chemical formula

Answer

nothing

Answer

the number of electrons of a specific element in the chemical formula

Question 11

How many hydrogen atoms are in one water molecule? (water = H₂O)

Accepted Answer

2

Answer

0

Answer

1

Answer

3

Question 12

How many carbon atoms are in one molecule of carbon dioxide? (carbon dioxide = CO₂₎

Accepted Answer

1

Answer

0

Answer

2

Answer

3

Question 13

What is the chemical formula for ammonia?

Accepted Answer

NH3

Answer

NaCl

Answer

CO2

Answer

C₆H₁₂O₆

Question 14

What is the chemical formula for table salt?

Accepted Answer

NaCl

Answer

CO2

Answer

NH3

Answer

C₆H₁₂O₆

Question 15

What is the chemical formula for glucose?

Accepted Answer

C₆H₁₂O₆

Answer

NaCl

Answer

CO2

Answer

NH3

Question 16

Which compound has this structure?

Accepted Answer

Glucose

Answer

Ammonia

Answer

Carbon dioxide

Answer

Iron Oxide

Question 17

What is the chemical formula for this structure?

Accepted Answer

NH3

Answer

H2SO4

Answer

H2O

Answer

N2

Question 18

What is name of the compound with this structure?

Accepted Answer

Nitrate

Answer

Diatomic Oxygen

Answer

Methane

Answer

Sodium Chloride

Question 19

Which of the following is an inorganic compound?

Accepted Answer

water

Answer

lipids

Answer

carbohydrates

Answer

protein

Question 20

Which organic compound is used to store excess energy?

Accepted Answer

lipids

Answer

carbohydrates

Answer

nucleic acids

Answer

proteins

Question 21

Which of the following is a characteristic of ionic compounds?

Accepted Answer

They have high melting points

Answer

They are good conductors of electricity in solid state

Answer

They are usually gases at room temperature

Answer

They are formed by sharing of electrons

Question 22

What is the chemical formula for sulfuric acid?

Accepted Answer

$$H_2SO_4$$

Answer

$$HCl$$

Answer

$$HNO_3$$

Answer

$$CH_3COOH$$

Question 23

Which of the following compounds is used as a common antiseptic?

Accepted Answer

Hydrogen peroxide

Answer

Ethanol

Answer

Sodium chloride

Answer

Calcium carbonate

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