density Flashcards
1
Q
SOLID
- what is the arrangement of particles
- movement
A
solid
- regular pattern
- vibrate around a fixed point
2
Q
LIQUID
- what is the arrangement of particles
- movement
A
liquid
- irregular pattern
- particles in a liquid can flow
3
Q
GAS
- what is the arrangement of particles
- movement
A
gas
- no pattern
- moving randomly and rapidly but in straight lines
4
Q
what does density of a materialtell us
A
the density of a material tells you the mass for a given volume
5
Q
equation for density
A
density= mass/volume
6
Q
units for volume
A
meters cubed
7
Q
units for mass
A
kilogram
8
Q
why do solids have a high density
A
particles are packed closely together. so solids have a lot of mass for their volume
9
Q
why do liquids have a high density
A
particles are close together so liquids have a lot of mass for their volume
10
Q
why do gases have low density
A
the particles are very far apart so they have a small mass for their volume
11
Q
name a solid with a low density and explain why it’s density is low
A
polystyrene
it has a very open structure and is full of air spaces. It has a small mass for its volume
