Particle of model matter Flashcards
(23 cards)
What happens when you melt a substance?
Goes from solid to liquid
Liquid to gas is called?
Evaporation
What is happens when condensation occurs?
Gas turns to liquid
Liquid -> Solid is ___________
Freezing
What is density?
Mass in a set volume
Equation for density
p = mass (kg) / volume (m cubed)
3 states of matter from most dense to least dense
Solid,
liquid,
gas
What is specific latent heat?
The amount of energy needed to change the state of 1kg of a substance with no change in temperature
At low temperature, there are going to be ________ molecules that have _______ energy.
More,
Less
At _______ temperature, more molecules have more energy.
High
What happens to pressure as gas is added into a container?
Pressure increases
Equation for pressure
P = V x Constant
Describe the particles in a solid
Tightly packed together, only move in a fixed spot
Describe the particles in a liquid
Packed together but more space to flow over eachother, irregular arrangement
Describe the particles in a gas
No regular arrangement, particles move freely
What is sublimation?
When a solid changes into a gas without passing through a liquid state.
What is the internal energy of a substance?
Energy stored by particles
How does heating affect the energy of a substance?
Transfers energy to the substance
State 3 factors that determine the temperature change of a system
Mass of substance
Type of material
Energy inputted into the system
What is the specific latent heat of vaporisation?
Energy required to change 1kg of a substance from liquid state to gas state without a change in temperature
Energy required to change 1kg of a substance from solid state to liquid state without a change in temperature is called _______.
Fusion
The higher the temperature of a gas, the ______ the rate of collision.
Higher
What increases when you do work on a gas?
The internal energy of the gas
