Examples of Chemical Reactions in Everyday

What is the process called where matter interacts to form new products?

• Physical change

• Molecular bonding

• State transition

• Chemical reaction

Answer explanation

The correct process where matter interacts to form new products is called a chemical reaction.

Which of the following is NOT a sign of a chemical reaction?

• Gas production

• Change of state

• Temperature change

• Colour change

Answer explanation

The correct choice is 'Change of state' because it is a physical change, not a sign of a chemical reaction.

What does aerobic cellular respiration produce?

• Glucose and oxygen

• Carbon dioxide and water

• Ethanol and carbon dioxide

• Oxygen and hydrogen

Answer explanation

Aerobic cellular respiration produces carbon dioxide and water as byproducts, making the correct answer choice 'Carbon dioxide and water'.

What is produced during the combustion reaction of propane?

• Carbon dioxide and oxygen

• Carbon monoxide and water

• Hydrogen and oxygen

• Carbon dioxide and water

Answer explanation

During the combustion reaction of propane, carbon dioxide and water are produced as the end products.

What is rust an example of?

• Neutralization reaction

• Reduction reaction

• Combustion reaction

• Oxidation reaction

Answer explanation

Rust is an example of an oxidation reaction where iron reacts with oxygen to form iron oxide, commonly known as rust.

What is the main purpose of digestion?

• To break down food into simpler forms

• To produce hydrochloric acid

• To absorb proteins and fats

• To store food for energy

Answer explanation

The main purpose of digestion is to break down food into simpler forms.

What happens in an acid-base reaction?

• Formation of salt and oxygen

• Formation of salt and water

• Release of carbon dioxide

• Release of hydrogen gas

Answer explanation

In an acid-base reaction, the correct outcome is the formation of salt and water, not salt and oxygen, release of carbon dioxide, or release of hydrogen gas.