Chemical reaction VS Physical reactions Flashcards
1
Q
What happens during a chemical reaction?
A
During a chemical reaction elements will be rearranged, and new substances will be formed
2
Q
What happens during a physical reaction
A
During a physical reaction/change a substance changes state/form,but the molecules that make it up never change
3
Q
Signs a chemical reaction has occurred
A
-state of matter change
- smoke may be seen
- sound produced
- heat produced
- color change
-smell
- gas produced (bubbles can form)
4
Q
Signs a physical change has occurred
A
- texture change
- shape change
-size change - temperature can change
- state of matter can change
