Chemical Reactions Flashcards
1
Q
Chemical Reaction
A
The molecules interact to from new substances.
2
Q
Conservation of mass
A
In a chemical reaction,matter is nerve created her destroyed,only rearranged.
3
Q
Observation that a chemical reaction has occurred
A
- Gas
- Color change
- New substance
- Temperature change
4
Q
Difference between physical and chemical change
A
The water stay the same of the physical.
