What is a physical change?
A change in the way matter looks.
Give 3 examples of physical changes.
Wow, you really know your stuff! / Sorry, we were looking for...
Is a change of state a physical change? Why or why not?
Yes, because the matter looks different but it's still the same kind of matter.
What physical changes happens to steel during car production?
Melting, hardening, bending, welding, painting, etc.
Give three examples of physical changes you can make to paper.
Wow, you really know your stuff! / Sorry, we were looking for...
What is a mixture?
Different kinds of matter mixed together.
Do all kinds of matter form solutions with water? Explain your answer.
No. Most solids won't dissolve, gases and liquids with densities different than that of liquid water won't combine.
How can you separate peas from carrots?
Pick them out by hand.
Name one way to separate sand from salt.
Wow, you really know your stuff! / Sorry, we were looking for...
You cannot see the salt in salt water. How do you know it is there?
Buoyancy, taste, organisms in it, etc.
