Chemical reactions

Multiple Choice

Why are chemical reactions essential for life and technology?

• Because they create energy and new materials needed for living organisms and modern devices.

• Because they only occur in laboratories and have no real-world impact.

• Because they are responsible for the destruction of matter.

• Because they are only important in cooking.

Open Ended

Describe the process by which reactants transform into products during a chemical reaction. Why is the breaking and forming of bonds important in this process?

Multiple Choice

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

• Temperature change

• Color change

• Gas formation

• Change in shape

Open Ended

Explain why it is important to balance chemical equations and describe the steps involved in the process.

Multiple Select

Which of the following are types of chemical reactions?

• Synthesis

• Decomposition

• Single Displacement

• Evaporation

Fill in the Blank

A reaction that absorbs energy from its surroundings and feels cold to the touch is called an ___ reaction.

Multiple Select

Which factors can increase the rate of a chemical reaction?

• Increasing temperature

• Decreasing concentration

• Increasing surface area

• Adding a catalyst

Open Ended

Describe one real-world application of chemical reactions and explain its significance.

Open Ended

How do chemical reactions transform matter in everyday life?

Multiple Choice

What are the main stages involved in a chemical reaction from start to finish?

• Reactants, Bonds Break & Form, Products

• Products, Bonds Break & Form, Reactants

• Reactants, Products, Bonds Break & Form

• Bonds Break & Form, Reactants, Products