P3: Particles and matter Flashcards
Particle arrangement of solids
Strong forces of attraction and in a fixed, regular arrangement. Don’t have much energy so can on,y vibrate around their fixed position
Particle arrangement of liquids
They have weaker forces of attraction between the particles. Particles are close together, but can move past eachother, and form irregular arrangements. They have more energy than solid particles.
Particle arrangements in gasses
There are almost no forces of attraction between particles. The particles have more energy than solid and liquid particles. There free to move and constantly moving in different directions very quickly
What are the three states of matter?
Solid, liquid, gas
Explain how a gas in a sealed container exerts a pressure on the walls of a container?
The gas particles are free to move in any direction and they move at high speeds. When they collide with the walls of a container they are exerting a pressure on it.
What is the formula for density?
Density(kg/m3)=mass/volume
True or false? Solids are usually denser than gases.
True
Describe how you could find the volume of a irregular shaped object
You would need a eureka can and you would put a measuring cylinder underneath the part where the water exits. You would then lower the object into the can and see the volume of water that you have collected.
What is internal energy?
This is the total energy of the kinetic energy and potential energy.
What happens to particles when a substance is heated?
The particles become faster and gain energy in the kinetic stores. This increases internal energy.
Name the five changes of state
Melting, evaporation/boiling, condensing, freezing
True or false? Mass stays the same when a substance changes state.
True
Define specific latent heat and also give a formula for specific latent heat.
Specific latent heat is the amount if energy needed to change 1kg of something into a different state.
Energy=mass x SHC
