A
Solid, Liquid and Gas.
What are the three states of matter?
The random movement of particles from an area of high concentration to an area of low concentration
Define Diffusion.
When a solid changes to a liquid.
What is does melting mean?
100° C
What is the boiling point of water?
Charge = +1
What charge does a proton have?
High density as particles packed very closely.
Cannot be compressed.
Have a definite volume and shape
Cannot diffuse.
Have a high density.
List the properties of a solid.
Particles are close together.
Cannot be compressed
Take up the shape of its container and have a definite volume.
Can diffuse because the particles are able to flow.
Has medium density.
Describe the properties of a liquid.
Low density as particles are spaced apart.
Can be compressed.
No fixed shape and can fill the shape of containers.
Can diffuse as particles are able to flow in all directions.
List the properties of a gas.
The particles vibrate more and more so they move further apart and the bar expands.
What happens to the particles in a metal bar when heated.
Charge = -1
What charge does an electron have?
When a gas cools to a liquid.
What is condensation?
Smelling aftershave at the other side of the room.
Adding milk to a cup of tea.
Smoke from a fire.
Give three examples of diffusion
It will diffuse faster than a liquid.
Will a gas diffuse faster or slower than a liquid?
Evaporation.
The change of state from a liquid to a gas is known as what?
Charge = 0
What charge does a neutron have?
Using mercury in a thermometer.
Rivets holding metal plates tightly together.
Uses of heat expansion
The buckling of a metal bridge in summer.
The snapping of electricity wires in winter.
Problems caused by expansion.
The forces of attractions are very strong.
Describe the forces of attraction in a solid.
Gas particles have more energy than liquid particles so they spread out more quickly.
Why does a gas diffuse faster than a liquid?
They each have a mass of 1
What is the mass of a neutron or proton?
Put a lighted splint over the test tube and it will burn with a squeaky pop
Describe the test for hydrogen.
The sugar will dissolve better in _______ water.
Will sugar dissolve better in warm or cold water?
A gas will dissolve better in _________ water.
Will a gas dissolve better in cold or warm water?
2, 8, 2
What is the electron arrangement of Magnesium?
The have a mass that is negligible and orbit the nucleus in shells
Describe the mass and position of electrons in an atom