density

Question 1

particles in a solid features
name 3
(arrangement)

Answer 1

• Particles are very close together. -Return particles are arranged in regular pattern.
• Particles vibrate but do not move from place to place

Question 2

particles in a liquid features

Answer 2

-Walls are close together.
-Particles not arranged in regular pattern
-particles of a liquid can move around each other
(they take the shape of its container)

Question 3

gas particles

Answer 3

-particles are very far apart -particles not arranged in any pattern
-particles move very rapidly and randomly
(they spread out)

Question 4

what does the density of a material tell us

Answer 4

the density of a material tells is the MASS FOR A GIVEN VOLUME

Question 5

density equation

density triangle

Answer 5

p=m/v
p= density (kg/m^3)
m= mass (kg)
v= volume(m^3)

^m^
p x V

Question 6

a block of wood has a mass of 150kg and a volume of 0.3m^3.

calculate the density

Answer 6

500kg/m^3

150kg/0.3m^3=500

p= m/v

m
p x v

Question 7

why do solids usually have a high density?

Answer 7

their particles are packed closely together, solids have a lot of mass for their volume

Question 8

why do liquids usually have a high density?

Answer 8

the particles are close together, liquids have a lot of mass for their volume

Question 9

explain the density in gas

why

Answer 9

gases have a low density the particles are very far apart

so gases only have a small mass for the volume

Question 10

why might some solid materials have a low density?

Answer 10

they might have a very open structure and are full of air spaces and they have a small mass for their volume