Jss 3 chemistry 2nd term mid term test 2025

Which type of chemical reaction involves the breakdown of a single compound into two or more simpler substances?

Which type of chemical reaction involves the exchange of ions between two compounds, resulting in the formation of new compounds?

Which type of chemical reaction involves the reaction of a metal with a non-metal, often producing a salt and releasing a gas?

Which of the following is a balanced chemical equation?

What is the coefficient of O2 when the following equation is balanced? C3H8 + O2 → CO2 + H2O

Which of the following best describes an exothermic reaction?

In an exothermic reaction, which of the following is true?

The chemical formula of glucose is

A type of reaction that can proceed in both forward and backward directions is called

When two elements combine chemically, they form a

Subjective

1.........and 2........are most reactive metals

3...........and 4..........are examples of endothermic reaction

Another name for reactivity series is ........

Essay Answer All 1a. Define Chemical Reaction. 1b. List and explain 2 types of chemical reactions. 1c. Write a balanced chemical equation on displacement reaction.

2. Explain the following a. Activation energy b. Energy barrier c. Endothermic reaction 2d. Draw the energy profile of an exothermic reaction.