Exploring the World of Chemistry

What is the chemical symbol for water?

• H2O2

• O2H

• H2O3

• H2O

What is the pH level of pure water?

• 6

• 7

• 5

• 8

What are the three states of matter?

• gas, liquid, crystal

• solid, liquid, plasma

• plasma, vapor, foam

• solid, liquid, gas

What is the process called when a solid turns into a gas?

• Evaporation

• Sublimation

• Melting

• Condensation

What is the main gas found in the Earth's atmosphere?

• Nitrogen

• Oxygen

• Helium

• Carbon Dioxide

What is PH

• A

• B

• C