types of chemical reactions

decomposition of a metal carbonate by heating

metal oxide and gaseous carbon dioxide and add states

decomposition of a metal carbonate with an acid

salt, water, gaseous carbon dioxide and states

oxidation of metal

metal oxide and outside of metal will appear matted

reactive metal with an acid

salt and hydrogen gas, causes vigorous bubbling (effervescence)

metal displacement

a more reactive metal displaces a less reactive metal from its compound and add states

•A + BC → AC + B

•e.g.   Zn_(s) + CuSO_4(aq) → ZnSO4_(aq) + Cu_(s)

metal displacement, the anion does not change only cation is displaced

•X + YZ → YX + Z

•e.g.   Cl_2(g) + 2KBr_(aq) → 2KCl_(aq) + Br_2(l)

halogen displacement, cation does not change, only anion is displaced

halogen displacement

a more reactive halogen displaces a less reactive halogen from compound

neutralisation

acid and base = salt and water

acids are, neautral are, strong basses

red, green purple