Matter Makes Our World
Matter can be a solid, a liquid, or a gas
Liquid - Water, oil, or apple juice are examples of liquids. A liquid is matter whose volume stays the same, even though its shape may change.
Solid - Solid matter keeps its shape and volume unless we cut or burn it, like trees or hard plastic.
Gas - Gas is a form of matter whose shape and volume can change, like air. Many gases are invisible.
To change a solid to a liquid or a liquid into a gas, you can add heat.
Hot Air Balloons were invented in France. When you heat air, it rises. Hot air fills the giant balloon. The balloon rises and pulls up the basket with the people in it. Today scientists use hot air balloons to study climate.
Evaporation is when liquid changes into gas. If you leave a bowl of water out in warm air, the water will slowly dissapear.
Condensation is when gas changes to liquid. It is the opposite of evaporation. Water molecules in the air turn to liquid. Like the water on a mirror after a shower.
George Washington Carver was a scientist who studied plants. He discovered many uses of peanuts. Some things he made from peanuts were bleach, shampoo, and shaving cream.