3 Particle Model of Matter Flashcards
Solids and liquids are ______________.
incompressible
What are solids like? (2)
- Particles are in a fixed pattern
* Fixed size and shape
What are liquids like? (2)
- Fixed size but contain freely moving particles
* Allows them to change shape to fit their container
What are gases like? (2)
- Large gaps between particles make them compressible
* Can change size and shape
Density equation
density = mass / volume
kg/m³ = kg / m³
💗
As energy is added to a system its ___________ will increase.
temperature
What is latent heat of fusion?
The energy needed for a substance to change from solid to liquid (melt).
What is latent heat of vaporisation?
The energy needed for a substance to change from liquid to gas (evaporate).
Equation for energy for change of state
energy = mass * specific latent heat J = kg * J/kg
What is specific latent heat?
The energy needed to cause 1 kilogram of a substance to change state.
Explain pressure
When a force is exerted on the walls of a container becauase of the collisions made by gas particles.
When work is done on a gas, the ________ ______ of the gas causes an ________ in ___________.
🚲
1) internal energy
2) increase
3) temperature
For a fixed mass of a gas at a constant temperature…
…p₁V₁ = p₂V₂
