Atoms, Molecules, and Chemical Reactions

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that in a chemical reaction, the total mass of the reactants is equal to the total mass of the products.

Front

What happens to the mass of steel wool when it burns?

Back

The mass of steel wool increases because it combines with oxygen from the air.

Front

How many molecules of water are needed to produce 2 molecules of hydrogen and 1 molecule of oxygen through electrolysis?

Back

4 molecules of water are needed.

Front

What are the three types of atoms found in Lauric Acid?

Back

Carbon (C), Hydrogen (H), and Oxygen (O).

Front

What is true about the number of atoms in a chemical reaction?

Back

The same number of each type of atom will always be present before and after a chemical reaction.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

What is the difference between reactants and products?

Back

Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result of the reaction.

Front

What is electrolysis?

Back

Electrolysis is a chemical process that uses electricity to break down compounds into their individual elements.