IPC-Chem Fall Semester Exam 23-24

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy, usually in the form of heat.

Front

How are particles in a solid arranged compared to those in a liquid?

Back

Particles in a solid are more tightly packed than those in a liquid.

Front

What is nuclear fusion?

Back

Nuclear fusion is the process where two light nuclei combine to form a heavier nucleus, releasing energy.

Front

What is nuclear fission?

Back

Nuclear fission is the process of splitting a heavy nucleus into two lighter nuclei, accompanied by the release of energy.

Front

What is the balanced equation for the reaction of hydrogen and oxygen to form water?

Back

2 H₂ + 1 O₂ → 2 H₂O.

Front

What is the primary characteristic of an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a chemical reaction without being consumed in the process.

Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (acidic) to 14 (basic), with 7 being neutral.