chem

?
describe a gas.
the particles are far apart and random and they move fast in all directions.
1 of 13
describe a liquid.
the particles are close together and move around each other.
2 of 13
describe a solid.
the particles are close together and vibrate around the fixed positions.
3 of 13
what is a state change?
state changes are physical changes, they can be reversed.
4 of 13
pure subsatnaces
cannot be changed. Is the same in all parts.
5 of 13
what happends when a solid melts?
the particles gain enough energy to overcome the weak forces.
6 of 13
proton
charge = +1 mass=1
7 of 13
electron
charge = -1 mass = 1/1835
8 of 13
neutron
charge = 0 mass = 1
9 of 13
atomic number
always the smallest number on the periodic table.
10 of 13
acid
an acid has a PH lower than 7
11 of 13
Alkali
an alkali has a PH higher than 7
12 of 13
what color is an acid?
red orange or yellow
13 of 13

Other cards in this set

Card 2

Front

describe a liquid.

Back

the particles are close together and move around each other.

Card 3

Front

describe a solid.

Back

Preview of the front of card 3

Card 4

Front

what is a state change?

Back

Preview of the front of card 4

Card 5

Front

pure subsatnaces

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all ssd resources »