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Chemical Reactions and Equations: Chapter 1 Quiz

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Chemical Reactions and Equations: Chapter 1 Quiz

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Questions and Answers

Which statement best describes the relationship between chemical changes and chemical reactions?

A chemical change can occur without a chemical reaction.

Chemical changes are reversible, but chemical reactions are not.

Chemical reactions and chemical changes are interchangeable terms.

Chemical reactions always lead to chemical changes. (correct)

Why is it important to wear suitable eyeglasses during Activity 1.1?

To show respect for the teacher's instructions.

To look more scientific and professional.

To avoid eye injuries from any splashes or debris. (correct)

To improve vision while performing the experiment.

What type of chemical reaction is taking place when barium chloride and sodium sulphate react to give barium sulphate and sodium chloride?

Combination reaction

Redox reaction

Decomposition reaction

Double displacement reaction (correct)

In the reaction between sodium hydroxide and hydrochloric acid, what are the products formed?

Sodium chloride and water Signup and view all the answers

In a redox reaction, which of the following statements is TRUE?

Both oxidation and reduction are occurring simultaneously Signup and view all the answers

What happens to atoms during a chemical reaction?

Atoms do not change into those of another element Signup and view all the answers

Which type of reaction involves the breaking and making of bonds between atoms to produce new substances?

Combination reaction Signup and view all the answers

What is the product formed when calcium oxide reacts with water?

Calcium hydroxide Signup and view all the answers

In the reaction between Zinc and Silver nitrate, which element is oxidized?

Zinc Signup and view all the answers

Which of the following reactions is an example of an endothermic reaction?

Zinc carbonate → Zinc oxide + Carbon dioxide Signup and view all the answers

What type of reaction is represented by the equation: Magnesium(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen(g)?

Displacement reaction Signup and view all the answers

Which of the following reactions represents a displacement reaction?

Zinc + Silver nitrate → Zinc nitrate + Silver Signup and view all the answers

Which of the following is a decomposition reaction where energy is supplied in the form of light?

$2HgO(s) ightarrow 2Hg(l) + O_2(g)$ Signup and view all the answers

What type of reaction involves the formation of a solid product known as a precipitate?

Precipitation reaction Signup and view all the answers