Chemical And Physical Changes Flashcards
1
Q
When does a chemical change occur?
A
It occurs when one or more new substances are made
2
Q
What are signs of a chemical change?
A
A new substance is made, the change is hard to reverse and it involves energy being taken in or given out
3
Q
What are signs of a physical change?
A
No new substances are made and the change is easy to reverse
