If the chemical properties of a substance remain unchanged and only the state changes it is called a……..
a) chemical change
b) physical change
c) both chemical and physical changes
d) neither chemical nor physical change
Which of the following is an example of a physical change?
a) metal rusting
b) silver tarnishing
c) boiling of water
d) burning of paper
What best describes a physical change?
a) composition change
b) composition stays the same
c) state stays the same
d) mass is lost
Which of the following is an example of chemical change?
a) water freezes
b) wood is cut
c) bread is baked
d) wire is bent
Rusting can be prevented by…………
a) scratching
b) painting
c) washing
d) cleaning
Milk turns sour, this is a………
a) physical change
b) chemical change
c) physical property
d) chemical property
