SMSH-PROJECTS-TYPES OF CHEMICAL QUESTIONS AND ANSWERS GRADED A+

Na₃PO₄ + 3 KOH → 3 NaOH + K₃PO₄ - double replacement MgCl₂ + Li₂CO₃ → MgCO₃ + 2 LiCl - double replacement C₆H₁₂ + 9 O₂ → 6 CO₂ + 6 H₂O - combustion Pb + FeSO₄ → PbSO₄ + Fe - single replacement CaCO₃ → CaO + CO₂ - decomposition P₄ + 3 O₂ → 2 P₂O₃ - synthesis 2 RbNO₃ + BeF₂→ Be(NO₃)₂ + 2 RbF - double replacement 2 AgNO₃ + Cu → Cu(NO₃)₂+ 2 Ag - single replacement C₃H₆O + 4 O₂ → 3 CO₂ + 3 H₂O - combustion 2 C₅H₅ + Fe → Fe(C₅H₅)₂ - synthesis SeCl₆+ O₂ → SeO₂ + 3Cl₂ - single replacement 2 MgI₂ + Mn(SO₃)₂ → 2 MgSO₃ + MnI₄ - double replacement O₃ → O + O₂ - decomposition2 NO₂ → 2 O₂ + N₂ - decomposition 2 NaBr + 1 Ca(OH)₂ → 1 CaBr₂ + 2 NaOH - Double replacement 2NH₃ +H₂SO₄ → (NH₄)₂SO₄ - Synthesis 4C₅H₉O + 27O₂ → 20CO₂ + 18H₂O - Combustion 3Pb + 2H₃PO₄ → 3H₂ + Pb₃(PO₄)₂ - Single replacement Li₃N + 3NH₄NO₃ → 3LiNO₃ + (NH₄)₃N - Double replacement 3HBR + Al(OH)₃ → 3H₂O + AlBr₃ - double replacement yields sign - the arrows in a chemical equation endothermic reaction - A reaction that ABSORBS energy in the form of heat reactant - a substance that takes part in and undergoes change during a reaction. exothermic reaction - A reaction that RELEASES energy in the form of heat product - A substance produced in a chemical reaction chemical equation - A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products