Water, Water, Everywhere: What Is Water?

The video explains the properties and phases of water, including its composition as H2O. It describes how water can exist as a liquid, solid, and gas, detailing the processes of freezing, melting, and evaporation. The video uses examples like freezing a glass of water and observing evaporation from a hot cup to illustrate these concepts.

What is the chemical formula for water?

• H2O2

• HO2

• O2H

• H2O

What happens to water when it is placed in a freezer?

• It remains liquid

• It boils

• It turns into ice

• It evaporates

What is the process called when ice turns back into liquid water?

• Melting

• Condensation

• Freezing

• Sublimation

What happens to water when it is left on a window sill for several days?

• It remains unchanged

• It freezes

• It evaporates

• It condenses

In which state can water exist?

• Only as a solid

• As a liquid, solid, and gas

• Only as a liquid

• Only as a gas