Particle model of matter Flashcards
(26 cards)
Properties of a solid?
- Particles close together
- Particles vibrate
- Particles in a regular pattern
- Can’t be squashed
- Do not flow
- Fixed shape
- Fixed volume
- High density
Properties of a liquid?
- Particles close together
- Particles move around each other
- Random arrangement
- Can’t be squashed
- Flow
- Fill shape of container
- Fixed volume
- Less dense than a solid but higher than a gas
Properties of a gas?
- Particles far apart
- Particles move freely in all directions
- Particles arranged randomly
- Can be squashed
- Can flow
- Fills container
- Volume can change
- Low density
What is it called when a solid goes to a liquid?
Melting
What is it called when a liquid goes to a solid?
Freezing
What is it called when a solid goes to a gas?
Sublimation
What is it called when a gas goes to a solid?
Cooling
What is it called when a liquid goes to a gas?
Vaporisation/ boiling
What is it called when a gas goes to a liquid?
Condensation
What is the conservation of mass?
Mass cannot be created or destroyed.
What is density?
Mass per unit volume
What is density measured in?
Kg/m^3
What is the equation for density?
Density= mass/volume
How do you find the density of a regular solid?
1) Measure the width, length and height.
2) Measure the mass with an electronic balance.
3) Calculate density.
How do you find the density of a liquid?
1) Place measuring cylinder on balance and zero it.
2) Measure 100ml liquid.
3) calculate density.
How do you find the density of an irregular solid?
1) Fill a Eureka can to just below spout.
2) Place solid into can and collect displaced water will measuring cylinder.
3) Weigh on a balance.
4) Calculate density.
How do objects float?
If the object is less dense that the substance it will float.
What is specific latent heat?
The amount of heat required to change the state of 1kg of a substance.
What are the two types of SLH?
SLH of fusion (solid to liquid)
SLH of vaporisation (liquid to gas)
What is SLH measured in?
J/Kg
What is the formula for SLH?
SLH= energy/mass
What is internal energy?
The total amount of Kinetic and potential energies in all the molecules of a substance.
What is pressure?
The amount of force pushing against a given area.
What is temperature?
The measure of the average energy of particles.
