How materials change
Which material will change when they are squashed?
Play dough or a piece of wood
play dough
What do we call a material when it can change back from a bending or twisting?
Reversible
True or False
Salt will not dissolve into water.
False
Is an ice cube a solid or a liquid?
Solid
Is rubber natural or man made?
Rubber is a natural elastic material. It is made from the sap of the rubber tree.
Changes in material that CAN NOT change back to its original shape is called?
Irreversible
Sugar or Dirt
Sugar
True or False
All solid items can be turned into a liquid.
False
How can we change metal or glass?
Add heat
When a candle burns the wax begins to?
Melt
Describe what happens when we add sugar to water?
It dissolves
True or False
Water can be changed into a solid and a liquid?
True
4 ways we can change a material
squashing, twisting, bending, stretching
If you take an ice cube, and apply heat, it will melt? Is this reversible or irreversible?
Reversible
Where can we get salt from?
Salt comes from the sea, and rocks underground
What can I apply to a solid to transform it into a liquid?
Heat