state matter p2 Flashcards
1
Q
chemical change
A
changes to a chemical structure of a substance. the substance don’t usually restore its original properties when the changes are reversed
2
Q
physical changes
A
Changes to the physical properties of a substance which can be reversed. Changes of state are physical changes since substances can restore their original properties when the changes are reversed
3
Q
pascals
A
unit of pressure
4
Q
density
A
mass per unit volume of an object
