Gr 9 NATURAL SCIENCES: CH 2.6 The general reaction of an acid with a metal carbonate
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Questions and Answers

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

  • An acid with a metal carbonate forms a precipitate and sulfuric acid.
  • An acid with a metal carbonate forms a metal oxide and nitrogen gas.
  • An acid with a metal carbonate forms a salt, water, and carbon dioxide gas. (correct)
  • An acid with a metal carbonate forms a base and oxygen gas.

What is the purpose of using universal indicator paper or a pH meter in this investigation?

  • To measure the concentration of the acid.
  • To observe the color change of the reaction.
  • To measure the temperature of the reaction.
  • To measure the pH of the resulting solution. (correct)

What is observed when calcium carbonate reacts with hydrochloric acid?

  • The solution becomes more acidic.
  • Bubbles form, indicating the release of a gas. (correct)
  • The solution turns yellow.
  • A precipitate forms.

What is the reactant in the reaction between hydrochloric acid and calcium carbonate?

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

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

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

What is the formula of the metal carbonate used in the investigation?

<p>CaCO₃ (C)</p> Signup and view all the answers

What is the gas produced in the reaction between hydrochloric acid and calcium carbonate?

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

What is the main component of shells of marine organisms, snails, and bird eggshells?

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

What is the purpose of adding lime to soil in agriculture?

<p>To provide a source of calcium for plant growth (A)</p> Signup and view all the answers

What is the common use of calcium carbonate in construction?

<p>As a component of cement (C)</p> Signup and view all the answers

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

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

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

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

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

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

What is found in the exoskeletons of crustaceans such as crabs, prawns, and lobsters?

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

What is the geological formation where calcium carbonate can be found?

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

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

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

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

<p>The metal carbonate acts as a reactant (B)</p> Signup and view all the answers

What is the product formed when calcium carbonate reacts with hydrochloric acid?

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

Why does the pH of the solution decrease during the reaction between hydrochloric acid and calcium carbonate?

<p>Because the acid is consumed during the reaction (C)</p> Signup and view all the answers

What is the formula for the salt produced in the reaction between hydrochloric acid and calcium carbonate?

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

What is the gas produced when calcium carbonate reacts with hydrochloric acid?

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

What is the purpose of the investigation between calcium carbonate and hydrochloric acid?

<p>To investigate the reaction between an acid and a metal carbonate (B)</p> Signup and view all the answers

What is the primary function of calcium carbonate in agricultural lime?

<p>To increase the pH of acidic soil and provide calcium for plant growth (A)</p> Signup and view all the answers

Which of the following is a common industrial application of calcium carbonate?

<p>Production of adhesives and ceramics (C)</p> Signup and view all the answers

What is the primary source of calcium in the human diet?

<p>Dark green leafy vegetables (D)</p> Signup and view all the answers

What is the process called when calcium carbonate is added to soil to increase its pH?

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

What is the main component of marble?

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

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

<p>To adjust the pH level of the water (D)</p> Signup and view all the answers

What is the primary use of calcium carbonate supplements?

<p>To provide a source of calcium for the human body (C)</p> Signup and view all the answers

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

<p>To provide structural support (C)</p> Signup and view all the answers

What is the significance of the bubbles formed when calcium carbonate reacts with hydrochloric acid?

<p>Indicates the production of carbon dioxide gas (B)</p> Signup and view all the answers

What is the pH of the resulting solution after the reaction between calcium carbonate and hydrochloric acid?

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

What is the role of the hydrochloric acid in the reaction with calcium carbonate?

<p>Acts as a reactant (D)</p> Signup and view all the answers

What is the chemical equation for the reaction between hydrochloric acid and calcium carbonate?

<p>2HCl + CaCO3 → CaCl2 + H2O + CO2 (C)</p> Signup and view all the answers

What is the type of reaction that occurs between an acid and a metal carbonate?

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

What is the general word equation for the reaction between an acid and a metal carbonate?

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

What is the purpose of using calcium carbonate in construction?

<p>As a binding agent (C)</p> Signup and view all the answers

What is the primary role of calcium carbonate in the geological formations of Cango Caves in South Africa?

<p>To form limestone deposits (C)</p> Signup and view all the answers

What is the primary source of calcium carbonate in dark green leafy vegetables like broccoli and kale?

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

What is the primary industrial application of calcium carbonate in construction?

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

What is the primary function of calcium carbonate in agricultural lime?

<p>To neutralize acidic soil (D)</p> Signup and view all the answers

What is the primary use of calcium carbonate in the form of supplements?

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

What is the primary component of marble?

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

What is the process called when calcium carbonate is added to soil to increase its pH?

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

What is the primary biological source of calcium carbonate?

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

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