Matter
Storyboard Text
- today we are going to be learning about matter. can someone tell me what the three physical properties and an example of them.
- the three properties of matter are.. solid, liquid, and gas.
- An example of a solid is a rock, glass, & tree. a liquid is.. water, tea, & soup. gas is... oxygen, helium, & propane.
- Very good!! now can anyone tell me the movement of particles in each property
- the particles in a gas are spread out.
- the particles in a solid are close packed and arranged in a regular structure.
- the particles in a liquid are slightly less close packed and there is some structure.
- Great! next is phase changes. when temperature changes, matter can undergo a phase change. ex: melting (changing from solid to liquid), freezing ( changing from liquid to solid), evaporation (changing from gas to a liquid
- does anyone know how to recognize a phase change?
- one way to recognize a phase change is the temperature of a substance as it is heated or cooled.
- the boiling point is the temperature where the gas from the liquid is pushing the air with the same force the air is pushing back.
- melting point is the temperature where molecules in a solid can move past each other and form a liquid
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