Paper 2 - Solids, Liquids and Gases Flashcards
1
Q
Why will heating a system change the energy stored within the system and raise its temperature / cause changes of state ?
A
- Increases kinetic energy store of particles
- Particles move more rapidly and randomly
- Which may cause a change in state
2
Q
Describe the changes in state that occur when a solid melts to form a liquid
A
- Particles in solid gain kinetic energy
- Vibrate more
- So can slide over each other and are not in rigid lattice structure
3
Q
Describe the changes in state that occur when a liquid evaporates or boils to form a gas
A
- Particles gain kinetic energy
- They move rapidly and randomly
- They are not touching and can move in any direction
4
Q
Describe the arrangement and motion of particles in a solid
A
- Particles vibrate around a fixed position
- They do not have enough kinetic energy to move freely
5
Q
Describe the arrangement and motion of particles in a liquid
A
- Particles have some kinetic energy
- They are free to move and can move around in random directions within the volume of the liquid
6
Q
Describe the arrangement and motion of particles in a gas
A
- Particles in a gas have large amounts of kinetic energy
- They move rapidly and randomly
- There are completely free to move
- They are separated with large distances
7
Q
What is specific heat capacity?
A
The energy required to change the
temperature of an object by one degree Celsius per kilogram of mass
8
Q
What is the equation for change in thermal energy
A
Q = mcΔT
9
Q
A
10
Q
A
