1. Solids and Liquids
HOW DO HEATING AND COOLING CHANGE THE PROPERTIES OF MATERIALS?
Solids and Liquids
Smithsonian Science for the Classroom™
© Smithsonian Institution

2. Scientist Roles Speaker Shares the group’s work Materials Manager
Collects materials and throws away trash
Messenger
Takes a message from the group
to the teacher
Artist
Draws what the group sees or makes
Speaker
Materials Manager
Artist
Messenger

3. Triangle Test Hold your bag at the top.
Tip it so a corner is pointing down.
Does your material make the shape of a triangle?

4. Cup Test Hold your bag at the top.
Tip it so a corner is pointing down.
Put the corner into the bottom of the cup.
Let go of the bag.
Gently shake the cup.
Gently press the material.
Can you make the material take the shape of the cup?

5. Pouring Test ? Ask your teacher to make a hole in the bag.
Hold the hole over the cup.
Can you empty the bag into the cup without opening the bag? ?

6. Is Sand a Solid or a Liquid?
You will look at a bag of sand.
Make a claim for whether sand is a solid or a liquid.
Remember that scientists use evidence.
You will present your claim to the class.