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Chemistry Quiz

Questions: 10 Difficulty: Mixed

You can only choose once. Choose wisely.

1. What is the gas produced during the electrolysis of water? (Chemistry)

Oxygen
Hydrogen
Carbon dioxide
Nitrogen

2. What is the term for the energy required to start a chemical reaction? (Chemistry)

Activation energy
Heat of fusion
Heat of vaporization
Reaction energy

3. Which gas is also known as laughing gas? (Chemistry, General Knowledge)

Nitrous Oxide
Oxygen
Carbon Dioxide
Methane

4. What is the molecular formula for ozone? (Chemistry)

O2
O3
O4
O

5. What is the process of solid changing directly to gas called? (Chemistry)

Vaporization
Sublimation
Deposition
Condensation

6. What is the hardest natural substance on Earth? (Chemistry)

Diamond
Topaz
Graphite
Quartz

7. What is the chemical formula of ammonia? (Chemistry)

CH4
NO3
NH3
NO2

8. What is the term for a chemical reaction that absorbs heat? (Chemistry)

Catalytic
Endothermic
Neutralization
Exothermic

9. What is the charge of an electron? (Chemistry)

Variable
Neutral
Positive
Negative

10. Which gas is known as laughing gas? (Chemistry)

Carbon monoxide
Nitrous oxide
Ethane
Methane