Conservation of Matter

Front

What is the Law of Conservation of Matter?

Back

The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; it only changes forms.

Front

In a chemical reaction, what are reactants?

Back

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

Front

In a chemical reaction, what are products?

Back

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

Front

If 5g of reactant A and 4g of reactant B are used, what is the total mass of the products?

Back

The total mass of the products will be 9g, according to the Law of Conservation of Matter.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What does it mean to say a chemical equation is balanced?

Back

A balanced chemical equation has the same number of each type of atom on both sides, indicating that matter is conserved.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

How many molecules are in the formula 2H2O?

Back

There are 2 molecules of water (H2O) in the formula 2H2O.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in a reaction.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is made up of two or more atoms bonded together.