chpt 11 Flashcards
rmb
1
Q
what is expansion
A
when the size of an object increases.
2
Q
change of density
A
density of an object decreases when objects expand. and increases when object decreases.
3
Q
what is contraction
A
the size of an object decreases
4
Q
list a physical change
A
- water freeze into ice
- salt evaporate with the water
5
Q
list a chemical change
A
