Atoms in Chemical Reactions TCI lesson 7 & 8 (adjusted)

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants on the left side and the products on the right side.

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction.

Front

What does it mean for a reaction to be exothermic?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings.

Front

What does it mean for a reaction to be endothermic?

Back

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

Front

What happens to atoms during a chemical reaction?

Back

During a chemical reaction, the bonds between atoms in reactants break and reform to create new substances.

Front

What is electrolysis?

Back

Electrolysis is a process that uses electricity to break down a compound into its individual elements.

Front

What are the products of the electrolysis of water?

Back

The products of the electrolysis of water are hydrogen gas (H2) and oxygen gas (O2).

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; the total mass of reactants equals the total mass of products.

Front

What is a cold pack and how does it work?

Back

A cold pack is a device that absorbs heat from its surroundings, causing an endothermic reaction that cools the area around it.