(Done) Particle model of matter (Paper 1) Flashcards
1
Q
Density calculation (x/y^3)
A
Density (x/y^3) = Mass (x) / Volume (y)
2
Q
Describe the particle arrangement in solids
A
- Strong forces of attraction
- Particles close together in a fixed, regular arrangement
3
Q
Describe the particle arrangement in liquids
A
- Weaker forces of attraction
- The particles are close together but can move past each other
- Irregular arrangement
4
Q
Describe the particle arrangement in gasses
A
- Almost no forces of attraction
- Free to move and travel in random directions at high speeds
5
Q
Define internal energy of a system
A
- The total energy that its particles have in their kinetic and potential energy stores
6
Q
How is a particles kinetic energy store increased
A
- When it is heated
7
Q
What are the axis on a heating graph
A
- X - Time
- Y - Temperature
8
Q
What happens at the diagonal points on a heating graph
A
- Increase in temperature
9
Q
What happens at the flat points on a heating graph
A
- Change in state
10
Q
Define specific latent heat
A
- The amount of energy required to change the state of 1Kg of substance without increasing its temperature
11
Q
Define specific latent heat of fusion
A
- The specific latent heat of an object from solid to liquid
12
Q
Define specific latent heat of vaporisation
A
- The specific latent heat of an object from liquid to gas
13
Q
Specific latent heat calculation
A
- Energy = mass x specific latent heat
14
Q
Define pressure
A
- The total force exerted by all of the particles in the gas on a unit area of the container walls
15
Q
What factors affect pressure
A
- Temperature of the particles
- Volume of the container
16
Q
Calculation for pressure for a gas of fixed mass at a constant temperature
A
- Pressure x Volume = constant
