Question Bank: Chemical Reactions and Equations

What is an exothermic reaction and provide examples of such reactions.

Why is it important to clean a magnesium ribbon before burning it in air?

Write the balanced equation for the reaction between sodium and water.

Write a balanced chemical equation with state symbols for the reaction between barium chloride and sodium sulfate.

Write a balanced chemical equation with state symbols for the reaction between sodium hydroxide and hydrochloric acid.

What is a chemical reaction and how do we know when it has taken place?

Explain the difference between physical and chemical changes in matter.

What is a chemical reaction and how do we know when it has taken place?

Explain the difference between physical and chemical changes in matter.

What is a chemical reaction and how is it different from a physical change?

Explain the concept of atoms not changing into different elements during a chemical reaction.

How do chemical reactions involve the breaking and making of bonds between atoms?

Define a combination reaction and provide an example.

What is an exothermic reaction and provide examples of such reactions.

Why is it important to clean a magnesium ribbon before burning it in air?

Write a balanced chemical equation with state symbols for the reaction between barium chloride and sodium sulfate.

Write a balanced chemical equation with state symbols for the reaction between sodium hydroxide and hydrochloric acid.

Explain the formation of slaked lime by the reaction of calcium oxide with water.

What happens when coal burns and write the balanced equation for the reaction.

Explain the formation of water from hydrogen and oxygen.

Provide examples of combination reactions in daily life.

Provide examples of exothermic reactions in daily life.

Explain the process of respiration as an exothermic reaction.

How does glucose provide energy in the process of respiration?

Explain the decomposition of vegetable matter into compost as an exothermic reaction.

Identify the type of reaction in Activity 1.1 where heat is given out along with the formation of a single product.

How is a solution of slaked lime used for whitewashing walls?

What are the products formed when calcium hydroxide reacts with carbon dioxide in air?

How does the concept of exothermic reactions relate to the energy needs of living organisms?

Discuss the importance of understanding chemical reactions in daily life.

What is a chemical reaction and how is it different from a physical change?

Explain the concept of atoms not changing into different elements during a chemical reaction.

How do chemical reactions involve the breaking and making of bonds between atoms?

Define a combination reaction and provide an example.

What is an exothermic reaction and provide examples of such reactions.

Why is it important to clean a magnesium ribbon before burning it in air?

Write the balanced equation for the reaction between sodium and water.

Write a balanced chemical equation with state symbols for the reaction between barium chloride and sodium sulfate.

Write a balanced chemical equation with state symbols for the reaction between sodium hydroxide and hydrochloric acid.

Explain the formation of slaked lime by the reaction of calcium oxide with water.

What happens when coal burns and write the balanced equation for the reaction.

Explain the formation of water from hydrogen and oxygen.

Provide examples of combination reactions in daily life.

Explain why a large amount of heat is evolved in a combination reaction.

Provide examples of exothermic reactions in daily life.

Explain the process of respiration as an exothermic reaction.

How does glucose provide energy in the human body through respiration?

Explain the decomposition of vegetable matter into compost as an exothermic reaction.

Identify the type of reaction in Activity 1.1 where heat is given out along with the formation of a single product.

Discuss the importance of balancing chemical equations.

Explain the role of catalysts in chemical reactions.

How do chemical reactions play a role in everyday life and industry?

Why should a magnesium ribbon be cleaned before burning in air?

What happens when magnesium is exposed to air?