physical changes

which of the following ones is a physical change?

• change in shape

• change in particles

• change in temperature

• all answers are correct

solid changing into liquid is named.....

• melting

• freezing

• boiling

the boiling point of water is

• 90 C

• 100 C

• 50 C

Both the melting and freezing point of water is

• -4 C

• -11 C

• 0 C

Changing the amount of a substance would change the melting point of it.

• True

• False

When the temperature of the railroad decreases, the train tracks will

• expand

• shrink