Law of Conservation of Mass

Front

What is the Law of Conservation of Mass?

Back

Mass is never created or destroyed in a chemical reaction.

Front

How many Hydrogen atoms are present in the product of the equation: 2SO2 + 2H2O2 ----> 2H2SO4?

Back

4

Front

In a reaction A + B ----> C, if reactant A has 5g and product C has 9g, how many grams does reactant B have?

Back

4g

Front

When CaCO3 is heated, what happens to the mass of the products?

Back

The sum of the products’ masses equals the mass of the CaCO3.

Front

How many Sulfur atoms are present in the reactants of the equation: 2SO2 + 2H2O2 ----> 2H2SO4?

Back

2

Front

What happens to the total mass of reactants in a chemical reaction?

Back

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

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during 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

If 10g of reactants produce 10g of products, what does this demonstrate?

Back

It demonstrates the Law of Conservation of Mass.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the mass is conserved during the reaction.