Properties
Define Stiff
Not easily bent or changed in shape
define reversible
Able to go back to how it was
Why are so many toys made out of plastic?
Plastic is cheap and can be made into many shapes at one time with a mold.
When it is really hot outside you want clothes that have the property of _______________.
Absorbant
Water changes from solid to liquid to gas. That mean it is -----------------------.
Reversible
Define Heat-trapping
Keeps heat in
Define property
traits of a material
Why were wooden toys so expensive?
Each toy had to be carved by hand.
When it is really cold, you want clothes that have the property of -----------------.
Heat-trapping
A cooked egg can not turn back into liquid. It is _____________.
Irriversible
Keeps Water Out
Define insulating
Does not allow heat through
What property of plastic allows it to be made into may shapes at once?
It is meltable.
Why are oven mitts not made of metal?
They are conducting and would let the heat through to burn your hand.
A house can be made out of smaller pieces of ________.
Wood or steal or brick
Define irreversible
Able to go back to how it was before
Define Conducting
Allows heat through
What tool do you use to make many copies of something at once?
A Mold
If you were going outside in the rain, you would want your rain coat to have the property of being ________.
Waterproof
This word means not see through
Opaque
Define Opaque
Not see through.
Sucks up liquid
What do popsicles and plastic toys have in common?
They are both meltable.
What are two ways you can make paper stronger?
Folding and stacking
Why do you need a metal pan to fry an egg on a hot sidewalk?
So it will conduct the heat