science unit 2 Flashcards
1
Q
what is a chemical change?
A
a change in one or more substances caused by a reaction that forms a new substance
2
Q
l, what is conservation of matter
A
a law that states that matter canot be made or destroy
3
Q
what is gas
A
gas is the state of maatter that has non shape or volume
4
Q
what is liquid
A
liquid a form of matter that has a volume that stays the same
5
Q
what is matter
A
anything that takes up space
6
Q
what is mixture
A
a combination of two substances or more
7
Q
what is physical change
A
physical change is a change of shape or volume
8
Q
what is solid
A
a state of matter that has a definite shape and volume
9
Q
what is solubility
A
how mouch of a substance can dissolve
10
Q
what is solution
A
A mixture that has the same composition throughout because all its parts are mixed evenly
