chemistry Flashcards
1
Q
what is a physical change
A
a physical change is a change that can easily be reversed
2
Q
what is a chemical change
A
a chemical change is where bonds are broken or new ones are formed
3
Q
example of a physical change
A
squashed can
4
Q
is a fried egg a chemical or physical change
A
chemical
5
Q
is melting ice a physical or chemical change
A
physical
6
Q
what are some characteristics of chemical changes
A
colour change
production of light
dormation of new solid
formation of gas
7
Q
what is a polymer
A
any substance composed of large molecules bonded together
