A
Cannot be changed back to the way it was before.
irreversible
Materials and substances that conduct heat well.
thermal conductors
The same throughout.
Uniform
Can be changed back to the way it was before.
reversible
the substance in a solution that is dissolved, e.g.salt
solute
Materials and substances that conduct electricity well.
electrical conductors
How fast something happens.
rate
The substance in a solution in which the solute dissolves, e.g. water.
solvent
Something about a substance that allows us to tell it apart from other substances.
property
The transfer of heat or electrical energy from one object to another.
conduction
The temperature at which particles throughout a liquid become a gas.
boiling point
The temperature at which a solid becomes a liquid.
melting point
The things we know that show us that something has happened or changed.
evidence
Any change that does not change a substance into a different substance.
physical change
The substances that react together in a chemical reaction.
reactants
To interact and change to make a new substance; also to respond to something.
react