Ch.2 Chemical Reactions Amplify Test

Front

What are the repeating groups of atoms that make up a substance called?

Back

Molecules.

Front

What is a reactant?

Back

A starting substance that is part of a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What does it mean to rearrange in a chemical context?

Back

To change the order or position of atoms in a chemical reaction.

Front

What is rust primarily composed of?

Back

Iron oxide, formed from iron and oxygen.

Front

What is the role of oxygen in the formation of rust?

Back

Oxygen reacts with iron in the presence of water or moisture to form rust.

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

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Front

What is an example of a chemical reaction?

Back

Burning wood, where wood reacts with oxygen to produce ash, smoke, and gases.

Front

What is the significance of temperature in a chemical reaction?

Back

Temperature can affect the rate of a chemical reaction; higher temperatures usually increase reaction rates.