Particle Model Of Matter Physics Flashcards
Solid
The state of matter where the particles are linked by strong forces. They are packed closely together and move very little. The particles usually form a regular and specific pattern.
Liquid
The state of matter where the particles have weaker bonds. They are still tightly packed but may move around each other.
Gas
The state of matter where particles are far apart and are in constant random motion. There is no interactive between the particles.
Melting Point
The temperature at which a solid turns into a liquid .
Boiling Point
The temperature at which a liquid turns into a gas.
Melting
When a solid changes to a liquid.
Boiling
When a liquid changes a gas at the boiling point
Evaporating
When a liquid changes to a gas below the boiling point
Condensing
When a gas changes to a liquid.
Specific Heat Capacity
The amount of energy required to raise the temperature of one kilogram of a substance by one degree Celsius. Often represented by the symbol ‘c’. Its unit it J/kg°C.
Specific Latent Heat
The amount of energy required to change the state of one kilogram of the substance with no change in temperature. Often represented by ‘L’. Its unit is J/kg..
Density
The mass per unit volume of a material. It can be thought of as representing how tightly packed the particles are within the material. Often represented by ‘ρ’. The unit of density is kg/m³.
Formula to calculate specific heat capacity
∆E = m x c x ∆θ
Formula to calculate specific latent heat
E = m x L
Formula to calculate density
p = m / V
Change Of State
When a substance changes from one state of matter to another (e.g. a solid changing into a liquid).
Freezing
Another word for when a liquid changes into a solid.
Evaporation
When a liquid changes into a gas.
Condensation
When a gas changes into a liquid.
How can you measure the volume of an irregular object?
By putting it in a cylinder of water and seeing the volume it displaces
How do you measure the volume of a regular object?
Using a rule, micrometer or Vernier callipers
3 poor conductors of heat
Glass, wood and plastic
