Law of Conservation of Matter (diagrams)

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 can only change forms.

Front

What are reactants in a chemical reaction?

Back

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

Front

What are products in a chemical reaction?

Back

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

Front

In a balanced chemical equation, what must be true about the number of atoms of each element?

Back

The number of atoms of each element must be the same on both sides of the equation.

Front

What happens to the mass of reactants in a closed system during a chemical reaction?

Back

The mass of the reactants remains the same as the mass of the products in a closed system.

Front

What might happen to the mass of products in an open system?

Back

The measurable mass might decrease because any gas produced can escape.

Front

If there are 4 Hydrogen atoms in the reactants, how many should be in the products?

Back

There should be 4 Hydrogen atoms in the products to satisfy the Law of Conservation of Matter.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation.

Front

Why is it important to balance chemical equations?

Back

Balancing chemical equations is important to reflect the conservation of mass and ensure accurate representation of a chemical reaction.

Front

What is an example of a chemical reaction that demonstrates the Law of Conservation of Matter?

Back

The reaction of hydrogen and oxygen to form water: 2H2 + O2 → 2H2O.