Precipitation= gives products which are insoluble. called a precipitate. eg. silver nitrate soluble + sodium chloride soluble makes silver chloride insoluble + sodium nitrate soluble.
exothermic. eg. manesium + hydrochloric acid.
thermal decoposition. is exothermic. is a substance split to form simpler substances. eg. calcium carbonate heated makes calcium oxide + carbon dioxide.
combustion. a hydrocarbon. always makes carbon dioxide and water.
metal + acid makes a salt + hydrogen.
acid + base makes a salt + water
metal oxide + acid makes a salt + water.
metal carbonate + acid makes a salt + carbon dioxide + water