Water

Water can occur in three states.

solid, liquid, and gas

Ice is frozen water.

The particles in ice are closely packed together.

Freezing is the process by which liquid water is transformed into ice.

Water freezes at 0 degrees Celsius or 32 degrees Fahrenheit.

Water ( is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms.

The chemical formula of water is H2O.

A water molecule contains two (2) Hydrogen (H) atoms one oxygen (O) atom.

Water boils at 100 degrees Celsius or 212 degrees Fahrenheit.

Vapor is water in gas form.

Water vapor is always present in the air.

Boiling is the action of bringing a liquid to the temperature at which it bubbles and turns to vapor.

Evaporation is a process where liquids change to a gas or vapor. Water changes to a vapor or steam from the energy created when molecules bounce into one another because they're heated up.

Condensation is the process where water vapor becomes liquid. It is the reverse of evaporation, where liquid water becomes a vapor. 

Examples of Condensation: Having a cold soda on a hot day, the can "sweats." Water molecules in the air as a vapor hit the colder surface of the can and turn into liquid water.

All living organisms need water to live.

Some types of water are:

• Freshwater or naturally occurring water.

• Saltwater water containing large amounts of salt.

• Ground water is water from rain that flows on the surface and collects underground.

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