Flashcards in P3: Particle Model Of Matter Deck (12)
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1
What is the specific heat capacity?
The energy required to Change 1kg of a substance by 1 degrees Celsius.
2
What is the specific latent heat?
The energy required to change 1kg of a substance from one state to another without changing the temperature
3
Internal energy:
Internal energy= chemical energy + kinetic energy
4
Properties of a solid(4):
-Particles have less internal energy than a liquid or gas. - They vibrate but DON’T move from their position.
- The particles are tightly packed.
- A solid has a fixed volume and shape.
5
Properties of a liquid(4):
-Particles of a liquid have more energy than solids but less than a gas.
-Particles move around each other.
- Particles are close together.
-A liquid has a fixed volume but NO fixed shape.
6
Properties of a gas(4):
- Gases have the most external energy out of all three states.
-The particles are widely spaced out.
-The particles move randomly and rapidly, colliding with each other.
- Gas particles fill the shape of the container.
7
When does a substance change state?
A substance changes state when energy is transferred to weaken the bonds between the particles of a substance.
8
Finding the volume of an irregular object:
-fill the displacement can with water
- measure the displaced water in the measuring cylinder
9
Define density.
The amount of particles in a set volume.
p=m/v
10
Gas pressure in a balloon:
When a balloon is being inflated the particles collide against the interior of the balloon, enlarging it.
As each gas molecule hits the side of a container it exerts a force, expanding or putting pressure on the walls of the container
11
What is the difference between specific latent heat of fusion and specific heat of vaporisation?(2):
- Fusion: solid to liquid or vice versa
- Vaporisation: liquid to gas or vice versa
12
