A Physical Change and Chemical Flashcards
1
Q
How do you know there’s been a physical change
A
- Change in colour
- Change in Shape or form
- Expansion
- Contraction
- Change in state
- Mix with another substance
Eg; can crushing, melting, boiling
2
Q
Chemical Change Occurs If?
A
- Colour Change
- Bubbles Produced
- New smell is detected
- A solid is produced
- Change in Temperature
- Light Produced
Eg: fireworks,
3
Q
Chemical Change
A
A chemical change occurs when 2 substances react together and a new substance is formed.
4
Q
Exothermic
A
A chemical reaction that releases energy
5
Q
Endothermic
A
A chemical reaction that absorbs energy
