chemistry

Rate of reaction

The speed at which reactants are used up or products are formed.

Collision theory

Particles must collide with enough energy and in the correct orientation for a reaction to occur.

Catalyst

A substance that speeds up a reaction by lowering activation energy and is not used up.

Dynamic equilibrium

When forward and backward reactions occur at the same rate in a closed system.

Crude oil

A finite resource consisting of a mixture of hydrocarbons.

Hydrocarbon

A compound containing only hydrogen and carbon atoms.

Alkene

An unsaturated hydrocarbon containing a carbon-carbon double bond.

Test for hydrogen

A lit splint produces a squeaky pop.

Test for oxygen

A glowing splint relights.

Test for carbon dioxide

Limewater turns cloudy.