Gr 9 NATURAL SCIENCES: CH 2.6 SUM Reactions of Acids with Bases: Part I

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Questions and Answers

What is the product of the reaction between a non-metal oxide and water?

  • Neutral solution with pH = 7
  • Basic solution with pH > 7
  • Acidic solution with pH < 7 (correct)
  • No reaction occurs

What is the general pH range of metal oxide solutions in water?

  • pH = 7
  • pH < 7
  • pH depends on the metal
  • pH > 7 (correct)

What is formed when a metal oxide reacts with an acid?

  • A salt and water (correct)
  • No reaction occurs
  • An acid and a base
  • A base and water

What is the purpose of universal indicator paper in the experiment?

<p>To measure the pH of the solution (D)</p> Signup and view all the answers

What type of reaction occurs when a metal oxide reacts with an acid?

<p>Acid-base reaction (A)</p> Signup and view all the answers

What is the general formula for metal hydroxides formed from Group 1 metals?

<p>MOH (A)</p> Signup and view all the answers

What is the reaction between a non-metal oxide and water called?

<p>Formation of acid rain (C)</p> Signup and view all the answers

What is the purpose of identifying the reactants in writing a reaction equation?

<p>To start writing the equation (D)</p> Signup and view all the answers

What is the formula for magnesium oxide?

<p>MgO (D)</p> Signup and view all the answers

What is the general formula for metal carbonates formed from Group 1 metals?

<p>M₂CO₃ (A)</p> Signup and view all the answers

What is the pH range of strong acids?

<p>pH 1-3 (A)</p> Signup and view all the answers

What is the universal indicator used for?

<p>To measure the pH of a solution (D)</p> Signup and view all the answers

What is the pH of a neutral solution?

<p>pH = 7 (D)</p> Signup and view all the answers

What happens when an acid and a base react?

<p>They neutralise each other (B)</p> Signup and view all the answers

What is the general equation for a neutralisation reaction?

<p>acid + base → salt + water (A)</p> Signup and view all the answers

What is the product of a neutralisation reaction?

<p>Typically water and a salt (C)</p> Signup and view all the answers

What should be done when handling laboratory acids?

<p>Handle them with care (B)</p> Signup and view all the answers

What is formed when non-metal oxides dissolve in water?

<p>An acid (C)</p> Signup and view all the answers

What is the pH range of weak acids?

<p>pH 4-6 (A)</p> Signup and view all the answers

What is the color of the universal indicator when vinegar is added?

<p>Red or orange (C)</p> Signup and view all the answers

What is the general word equation for the reaction of an acid with a metal hydroxide?

<p>acid + metal hydroxide → salt + water (A)</p> Signup and view all the answers

What is the product of the reaction between hydrochloric acid and sodium hydroxide?

<p>sodium chloride (A)</p> Signup and view all the answers

What is the purpose of the universal indicator paper in the experiment?

<p>to measure the pH of the reaction (C)</p> Signup and view all the answers

What is formed when calcium carbonate reacts with hydrochloric acid?

<p>carbon dioxide (C)</p> Signup and view all the answers

What is the general equation for the reaction of an acid with a metal carbonate?

<p>acid + metal carbonate → salt + water + carbon dioxide (B)</p> Signup and view all the answers

What is the purpose of the steps to write reaction equations?

<p>all of the above (D)</p> Signup and view all the answers

What is the reactant in the reaction between hydrochloric acid and potassium hydroxide?

<p>potassium hydroxide (A)</p> Signup and view all the answers

What is the product of the reaction between sulfuric acid and potassium hydroxide?

<p>potassium sulfate (C)</p> Signup and view all the answers

What is the role of the metal hydroxide in the reaction?

<p>to react with the acid (B)</p> Signup and view all the answers

What is the general equation for the reaction of an acid with a metal?

<p>acid + metal → salt + water (B)</p> Signup and view all the answers

What is the main component of shells of marine organisms?

<p>Calcium carbonate (B)</p> Signup and view all the answers

What is the process of adding lime to soil to increase its pH and provide a source of calcium?

<p>Liming (B)</p> Signup and view all the answers

What is the common use of calcium carbonate in swimming pools?

<p>To adjust the pH levels (A)</p> Signup and view all the answers

What is the form of calcium carbonate used in agriculture to neutralize acidic soil?

<p>Agricultural lime (C)</p> Signup and view all the answers

What is the name of the caves in South Africa that contain limestone formations?

<p>Cango Caves (C)</p> Signup and view all the answers

What is the nutritional source of calcium provided by dark green leafy vegetables?

<p>Calcium (D)</p> Signup and view all the answers

What is the common use of calcium carbonate in construction?

<p>As a building material (B)</p> Signup and view all the answers

What is the form of calcium carbonate used in adhesives and paints?

<p>Calcium carbonate (B)</p> Signup and view all the answers

What is the reason why calcium carbonate is added to swimming pools?

<p>To make the water more basic (B)</p> Signup and view all the answers

What is the purpose of calcium carbonate in agriculture?

<p>To provide a source of calcium (B)</p> Signup and view all the answers

What is the result of the reaction between a metal oxide and an acid?

<p>A salt and water are formed. (C)</p> Signup and view all the answers

What type of solutions are formed when metal oxides dissolve in water?

<p>Basic solutions (A)</p> Signup and view all the answers

What is the purpose of using universal indicator paper in an experiment?

<p>To measure the pH of a solution (A)</p> Signup and view all the answers

What is the general pattern of the reaction between a metal oxide and an acid?

<p>Exchange reaction (A)</p> Signup and view all the answers

What is the result of the reaction between a non-metal oxide and water?

<p>An acidic solution is formed (C)</p> Signup and view all the answers

What is the general word equation for the reaction of an acid with a metal oxide?

<p>Acid + metal oxide → salt + water (B)</p> Signup and view all the answers

What is the purpose of balancing a chemical equation?

<p>To ensure the number of atoms of each element is the same on both sides of the equation (B)</p> Signup and view all the answers

What is the general characteristic of metal hydroxides?

<p>They are basic and form solutions with pH values above 7 (D)</p> Signup and view all the answers

What is the role of the metal oxide in the reaction with an acid?

<p>It acts as a base (D)</p> Signup and view all the answers

What is the general formula for metal oxides formed from Group 2 metals?

<p>MO (D)</p> Signup and view all the answers

What is the pH of a solution that is strongly basic?

<p>Greater than 7 (C)</p> Signup and view all the answers

What is the result of mixing a strong acid and a strong base?

<p>A neutral solution (C)</p> Signup and view all the answers

Which of the following acids is commonly used in a laboratory?

<p>All of the above (D)</p> Signup and view all the answers

What is the color of the universal indicator when a strong base is added?

<p>Blue or green (C)</p> Signup and view all the answers

What is formed when a non-metal oxide dissolves in water?

<p>An acid (D)</p> Signup and view all the answers

What is the pH range of a weak acid?

<p>4-6 (D)</p> Signup and view all the answers

What is the result of a neutralisation reaction?

<p>A neutral solution and a salt (B)</p> Signup and view all the answers

What is the purpose of using a universal indicator?

<p>To measure the pH of a solution (B)</p> Signup and view all the answers

What is the general equation for a neutralisation reaction?

<p>acid + base → salt + water (A)</p> Signup and view all the answers

Why is it important to handle laboratory acids with care?

<p>Because they are corrosive (C)</p> Signup and view all the answers

What is the primary component of the shells of marine organisms?

<p>Calcium carbonate (A)</p> Signup and view all the answers

What is the purpose of adding calcium carbonate to swimming pools?

<p>To increase the pH level (A)</p> Signup and view all the answers

What is the term for the process of adding lime to soil to increase its pH?

<p>Liming (C)</p> Signup and view all the answers

What is the common use of calcium carbonate in construction?

<p>As a building material (A)</p> Signup and view all the answers

What is the form of calcium carbonate used in agriculture to neutralize acidic soil?

<p>Agricultural lime (C)</p> Signup and view all the answers

What is the nutritional source of calcium provided by dark green leafy vegetables?

<p>Calcium carbonate (C)</p> Signup and view all the answers

What is the name of the caves in South Africa that contain limestone formations?

<p>Cango Caves (C)</p> Signup and view all the answers

What is the common use of calcium carbonate in adhesives and paints?

<p>As a filler (A)</p> Signup and view all the answers

What is the primary source of calcium in bird eggshells?

<p>Calcium carbonate (B)</p> Signup and view all the answers

What is the role of calcium carbonate in the exoskeletons of crustaceans?

<p>Provides structural support (A)</p> Signup and view all the answers

What is the general equation for the reaction of an acid with a metal hydroxide?

<p>acid + metal hydroxide → salt + water (B)</p> Signup and view all the answers

What is the purpose of the steps to write reaction equations?

<p>To identify the reactants and predict the products (B)</p> Signup and view all the answers

What is the reactant in the reaction between hydrochloric acid and potassium hydroxide?

<p>Hydrochloric acid (C)</p> Signup and view all the answers

What is formed when calcium carbonate reacts with hydrochloric acid?

<p>Calcium chloride, water, and carbon dioxide (C)</p> Signup and view all the answers

What is the role of the metal hydroxide in the reaction?

<p>To react with the acid to form a salt and water (D)</p> Signup and view all the answers

What is the product of the reaction between sulfuric acid and potassium hydroxide?

<p>Potassium sulfate and water (B)</p> Signup and view all the answers

What is the general equation for the reaction of an acid with a metal carbonate?

<p>acid + metal carbonate → salt + water + carbon dioxide (C)</p> Signup and view all the answers

What is the purpose of identifying the reactants in writing a reaction equation?

<p>To identify the reactants and predict the products (D)</p> Signup and view all the answers

What is formed when an acid reacts with a metal carbonate?

<p>Salt, water, and carbon dioxide (B)</p> Signup and view all the answers

What is the purpose of balancing the chemical equation?

<p>To ensure the number of atoms of each element is the same on both sides of the equation (D)</p> Signup and view all the answers

What is the primary purpose of using a universal indicator in an experiment involving acids and bases?

<p>To identify the pH of the solution (C)</p> Signup and view all the answers

Which of the following is a characteristic of a strong base?

<p>pH &gt; 7 (C)</p> Signup and view all the answers

What is the result of mixing a strong acid with a weak base?

<p>A acidic solution is formed (A)</p> Signup and view all the answers

What is the purpose of handling laboratory acids with care?

<p>They are highly corrosive (C)</p> Signup and view all the answers

What is the product of the reaction between a non-metal oxide and water?

<p>An acid and water (A)</p> Signup and view all the answers

Which of the following is an example of a weak acid?

<p>Carbonic acid (H₂CO₃) (C)</p> Signup and view all the answers

What is the general equation for the reaction between an acid and a base?

<p>Acid + Base → Salt + Water (A)</p> Signup and view all the answers

What is the pH of a solution that is midway between a strong acid and a strong base?

<p>pH 7 (A)</p> Signup and view all the answers

What is the purpose of using a pH scale?

<p>To measure the acidity or basicity of a solution (B)</p> Signup and view all the answers

What is the result of mixing a weak acid with a strong base?

<p>A basic solution is formed (C)</p> Signup and view all the answers

What is the difference between the reaction of an acid with a metal hydroxide and the reaction of an acid with a metal carbonate?

<p>The reaction with a metal hydroxide produces a gas, while the reaction with a metal carbonate does not (D)</p> Signup and view all the answers

What is the purpose of the steps to write reaction equations?

<p>To ensure the correct sequence of reactants and products (A)</p> Signup and view all the answers

What is the role of the metal hydroxide in the reaction with an acid?

<p>It acts as a base (B)</p> Signup and view all the answers

What is the general equation for the reaction of an acid with a metal carbonate?

<p>acid + metal carbonate → salt + water + carbon dioxide (A)</p> Signup and view all the answers

What is the product of the reaction between hydrochloric acid and calcium carbonate?

<p>calcium chloride and carbon dioxide (B)</p> Signup and view all the answers

What is the difference between a metal hydroxide and a metal carbonate?

<p>A metal hydroxide reacts with acids to form a salt and water, while a metal carbonate reacts with acids to form a salt, water, and carbon dioxide (D)</p> Signup and view all the answers

What is the purpose of using a universal indicator in an experiment?

<p>To measure the pH of a solution (C)</p> Signup and view all the answers

What is the general word equation for the reaction of an acid with a metal hydroxide?

<p>acid + metal hydroxide → salt + water (C)</p> Signup and view all the answers

What is the role of the acid in the reaction with a metal hydroxide?

<p>It acts as an acid (D)</p> Signup and view all the answers

What is the general characteristic of metal hydroxides?

<p>They are basic (A)</p> Signup and view all the answers

What is the reason for the difference in pH values of metal oxides and non-metal oxides when they dissolve in water?

<p>The difference in electronegativity between metal and non-metal atoms (C)</p> Signup and view all the answers

What is the characteristic that metal oxides and metal hydroxides have in common when they dissolve in water?

<p>They are both basic and form solutions with pH values above 7 (B)</p> Signup and view all the answers

What is the purpose of the universal indicator paper in the experiment involving the reaction of magnesium oxide with hydrochloric acid?

<p>To measure the pH of the solution during the reaction (B)</p> Signup and view all the answers

What is the primary source of calcium carbonate in the shells of marine organisms?

<p>Biological precipitation from the organism's body (C)</p> Signup and view all the answers

What is the general pattern of the reaction between a metal oxide and an acid?

<p>Acid + metal oxide → salt + water (D)</p> Signup and view all the answers

What is the main reason why calcium carbonate is added to swimming pools?

<p>To reduce the acidity of the pool (C)</p> Signup and view all the answers

What is the primary application of calcium carbonate in agriculture?

<p>Soil pH adjustment (A)</p> Signup and view all the answers

What is the characteristic of metal hydroxides that makes them basic?

<p>They contain a hydroxide anion (OH⁻) (B)</p> Signup and view all the answers

What is the purpose of identifying the reactants in writing a reaction equation?

<p>To predict the products of the reaction (B)</p> Signup and view all the answers

What is the primary source of calcium in dark green leafy vegetables?

<p>Calcium carbonate (A)</p> Signup and view all the answers

What is the general word equation for the reaction of an acid with a metal carbonate?

<p>Acid + metal carbonate → salt + water + carbon dioxide (B)</p> Signup and view all the answers

What is the primary component of the exoskeletons of crustaceans?

<p>Calcium carbonate (C)</p> Signup and view all the answers

What is the geological process that forms limestone formations?

<p>Precipitation of calcium carbonate (A)</p> Signup and view all the answers

What is the result of the reaction between a metal oxide and an acid?

<p>The formation of a salt and water (A)</p> Signup and view all the answers

What is the primary use of calcium carbonate in construction?

<p>Cement production (C)</p> Signup and view all the answers

What is the purpose of balancing a chemical equation?

<p>To ensure the number of atoms of each element is the same on both sides of the equation (B)</p> Signup and view all the answers

What is the characteristic of metal oxides that makes them basic?

<p>They have a high pH value when dissolved in water (D)</p> Signup and view all the answers

What is the term for the process of adding calcium carbonate to soil to increase its pH?

<p>Liming (A)</p> Signup and view all the answers

What is the primary reason why calcium carbonate is used in adhesives and paints?

<p>To adjust their pH (B)</p> Signup and view all the answers

What is the term for the caves in South Africa that contain limestone formations?

<p>Cango Caves (B)</p> Signup and view all the answers

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