Year 9 Chemistry

: Chemical reactions in which a substance is broken down into simpler substances

Chemical reactions that wear away a metal. Air, water or chemicals contained in air and water, as well as other household substances, can be corrosive.

Chemical reactions involving the transfer of electrons from the atoms of a more reactive metal to the ions of a less reactive metal

Special chemicals that speed up reactions but are themselves not used up in the reaction

Chemical reactions in which two substances, usually elements, combine to form a compound

Chemical reactions involving the transfer of electrons from the atoms of a more reactive metal to the ions of a less reactive metal