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Grade 2 - Unit - 9 - Changes in matter (How does matter change?…
Grade 2 - Unit - 9 - Changes in matter
How does matter change?
Freezing
Change of state from liquid to solid.
An ice pop is mostly water. It freezes into a solid.
Evaporation
Water turns into water vapor.
Hot tea gets cool over time due to evaporation.
Melting
Change of state from solid to liquid.
The ice pop gets warm and melts into a liquid.
Condensation
Change of state from gas to liquid.
Dew forms in the morning on leaves because the warmer air deposits on the cool leaves.
What are the properties of matter?
Color
An object can be green, blue, black, or red.
Shape
Size
Texture
What are the states of matter?
Solid
Towel, chair and hat are all solids.
This is the only state of matter that has its own shape.
The mass of a solid can be measured.
Liquid
It takes the shape of its container.
The volume of a liquid can be measured.
Juice and salt water are all liquids.
What are the states of water?
Ice, water and water vapor.
Gas
You cant see air, but you can see and feel what it does.
Air is made up of gases
