reaction化學(xué)反應(yīng)式

1、Chemical Reactions Involving OxygenA chemical change is any change in which a new substance is formed.Evidence: Release of energy as heat and light, change in colour, formation of gas, change in odour, etc.sulfur + oxygen sulfur dioxidephosphorus + oxygen diphosphorus pentoxidemagnesium + oxygen mag

2、nesium oxideiron + oxygen iron(III) oxideChemical Reactions Involving Oxygencombustion: AB + oxygen oxides of A & Bsynthesis: A + B Cdecomposition: AB A + Bsingle displacement: A + BC AC + Bdouble displacement: AB + CD AD + CBTypes: SynthesisExample C + O2OO C+OO COO COO COO COO COO COO COO COO

3、COO COO COO COO COO COO CGeneral: A + B ABTypes: DecompositionExample: NaClGeneral: AB A + BCl NaCl+ NaTypes: DecompositionExample 2HgOO HgO Hg HgO O Hg+General: AB A + BTypes: Single displacementExample: Zn + CuCl2 ZnClCl Cu+General: AB + C AC + BClCl Zn Cu+Types: Double displacementExample: MgO +

4、CaSGeneral:AB + CD AD + CB SOMg Ca+O SMg Ca+Chemical Reactions Involving Oxygencombustion: AB + oxygen oxides of A & Bsynthesis: A + B Cdecomposition: AB A + Bsingle displacement: A + BC AC + Bdouble displacement: AB + CD AD + CBPart 1 reactions can be described as both combustion and synthesisL

5、itmus turned red. Non-metal oxides react with water to form acids.Oxygen (O2). A chemical change. If it were a physical change of state it would keep bubbling until it all evaporated (not turn solid)Chemical Reactions Involving OxygenThis is a decomposition reactionpotassium chlorate potassium chloride + oxygen Single displacementDecompositionSynthesisDouble displacementSingle displace