Testing

• What is the formula for percentage yield?

  Percentage Yield = (actual mass / theoretical mass) × 100
• What does the actual mass of product refer to?

  Mass of product actually made
• What does the maximum theoretical mass of product refer to?

  Maximum mass of product expected from reaction
• What is the formula for atom economy?

  Atom Economy = (relative formula mass of desired product / sum of all relative formula masses of all reactants) × 100
• What does the relative formula mass of the desired product refer to?

  Mass of the desired product from the equation
• What does the sum of relative formula masses of all reactants refer to?

  Total mass of all reactants in the equation
• How do you calculate energy change in a reaction?

  Energy change = energy to break bonds in reactants - energy released when bonds in the products are formed
• What is the formula for mean rate of reaction using reactants?

  Mean rate = quantity of reactant used / time taken
• What is the formula for mean rate of reaction using products?

  Mean rate = quantity of product formed / time taken
• How is quantity usually measured in reactions?

  As a mass or volume
• What is the formula for Rf value in chromatography?

  Rf = distance moved by substance / distance moved by solvent
• What does the Rf value indicate in chromatography?

  It indicates the relative distance traveled by a substance
• What is the product of carbon combustion?

  Carbon dioxide
• What is the reactant in the combustion of carbon?

  Carbon
• What is the chemical equation for the combustion of carbon?

  C+ O2 → CO2
• What is the reactant in the combustion of hydrogen?

  Hydrogen
• What is produced when hydrogen combusts?

  Water
• What is the chemical equation for the combustion of hydrogen?

  2H2(g) + O2(g) → 2H2O
• What is the reactant in the combustion of methane?

  Methane
• What are the products of methane combustion?

  Carbon dioxide and water
• What is the chemical equation for the combustion of methane?

  CH4 + O2 → CO2 + H2O
• What is the reactant in the oxidation of copper?

  Copper
• What is produced when copper oxidizes?

  Copper (II) oxide
• What is the chemical equation for the oxidation of copper?

  2Cu + O2 → CuO
• What are the products of sodium reacting with water?

  Sodium hydroxide and hydrogen
• What is the chemical equation for the reaction of sodium with water?

  2Na + 2H2O → 2NaOH + H2
• What is the product of sodium bromide and chlorine?

  Sodium chloride and bromine
• What happens when magnesium reacts with hydrochloric acid?

  It produces magnesium chloride and hydrogen
• What is the reaction between bromine and sodium chloride?

  Bromine displaces sodium chloride
• What is the result of the reaction between copper(II) oxide and hydrochloric acid?

  Copper(II) chloride and water are produced
• What is produced when magnesium displaces copper(II) sulfate?

  Magnesium sulfate and copper
• What is the ionic equation for the displacement reaction of magnesium and copper(II) sulfate?

  Mg + CuSO₄ → MgSO₄ + Cu
• What is the product of sodium hydroxide and hydrochloric acid?

  Sodium chloride and water
• What is the ionic equation for the neutralization of sodium hydroxide and hydrochloric acid?

  Na⁺ + OH^- + H⁺ → Na⁺ + H₂O
• What is produced when marble chips react with hydrochloric acid?

  Calcium chloride, water, and carbon dioxide
• What is the reaction equation for calcium carbonate and hydrochloric acid?

  CaCO₃ + HCl → CaCl₂ + H₂O + CO₂
• What are the main types of chemical reactions discussed?

  • Displacement reactions
  • Reactions of metals with acids
  • Neutralization reactions
  • Reactions of metal oxides with acids
• What are the products of the reaction between calcium carbonate and hydrochloric acid?

  • Calcium chloride
  • Water
  • Carbon dioxide