density and kinetic theory

Question 1

what is density

Answer 1

the mass of a object divided by its volume

Question 2

what formula is used for density

Answer 2

density = mass/volume

Question 3

whats the unit of density

Answer 3

kilogram per cubic meter
or gram per cubic meter
kg/m3

Question 4

whats kinetic theory

Answer 4

explains the properties of solids, liquids and gases according to the arrangement and motion of their molecules

Question 5

explain the density in a solid

Answer 5

molecules are packed close to each other
molecules vibrate about fixed positions
solids have a fixed shape and volume
have high density
there are strong forces of attraction between the molecules

Question 6

why do solids have high density

Answer 6

because their molecules are so tightly packed

Question 7

explain the density in liquids

Answer 7

the molecules are close together (not as close as solids)
molecules arnt in a fixed position and they can move around
they have a fixed volume but take shape of their container
they have a medium density
forces strong but not as strong as solids

Question 8

what density do liquids have

Answer 8

they have a medium density

Question 9

explain the density in GASES

Answer 9

there are large distances between the molecules
the molecules can move around in quickly in all directions
gases completely fill their container
low density
the forces of attraction between them are negligible

Question 10

why do gases have low density

Answer 10

the forces of attraction between them are negligible