Chemistry

Atom

Smallest unit of an element that still maintains its properties; building blocks of matter

Ion

an atom with a positive or negative charge

exothermic reaction

chemical reaction in which energy is primarily given off in the form of heat

endothermic reaction

A reaction that proceeds with the net absorption of energy, heat, from the surroundings.

Hydrochloric Acid

HCl

Sulphuric Acid

H?SO?

Nitric Acid

HNO?

Carbonic Acid

H?CO?

Ethanoic Acid

CH?COOH

Base

Substance that creates hydroxide ions in solution or accepts hydrogen ions

Acid

compound that forms hydrogen ions (H+) in solution a solution with a pH of less than 7

Acid Rain

precipitation that is more acidic than normal