Physical Change :
Physical Change Substance may seem different, but the way the atoms link up is the same.
It’s a physical change if :
It’s a physical change if It changes shape or size
It dissolves.
Slide 4:
It changes phase (freezes, boils, evaporates, condenses) It’s a physical change if...
Chemical Change :
Changes the way the molecules link up
Makes new substances Chemical Change
It’s a chemical change if…. :
It’s a chemical change if…. It burns
Temperature changes without heating/cooling
It’s a chemical change if... :
It’s a chemical change if... It bubbles (makes a gas)
It’s a chemical change if... :
It’s a chemical change if... It changes color
It forms a precipitate
What kind of change is it if someone... :
What kind of change is it if someone... Tears up paper?
Physical change
Mixes salt and water?
Physical change
What kind of change is it if someone... :
What kind of change is it if someone... Burns paper?
Chemical change
Evaporates salt water?
Physical change
What kind of change is it if someone... :
What kind of change is it if someone... Mixes vinegar and baking soda?
Chemical change