Physical & Chemical Change Flashcards
1
Q
State the difference between a physical and a chemical change
A
Physical - when the molecule stays the same but changes state e.g liquid to gas
Chemical - occurs when a molecule becomes a completely different one, forming a new substance
2
Q
A change that is easy to reverse, products have the same chemical products as the starting materials and no new substances are formed is called?
A
Physical change
3
Q
True or false, chemical changes are difficult to reverse?
A
True
4
Q
The change of state directly from solid to gas is called?
A
Sublimation
5
Q
Burning a candle, rusting of metal, rising of bread dough, grapes made into wine and electrolysis of water are all examples of _______ change
A
Chemical
