Understand Conservation of Mass in Reactions

Front

What are the starting substances in a chemical equation?

Back

Reactants

Front

If a reaction starts with a total of 75g of reactants, what should the total mass of products be?

Back

75g of products

Front

In a chemical reaction, what happens to the total mass of reactants and products?

Back

The total mass is conserved; it remains the same.

Front

What is the principle of conservation of mass?

Back

Mass cannot be created or destroyed in a chemical reaction.

Front

If 15g of baking soda and 10g of vinegar react and produce 23g of products, what is the mass of the gas that escaped?

Back

2g of gas escaped.

Front

In the reaction A + B -> C, if A has 5g and C has 9g, how much does B weigh?

Back

4g

Front

What is the total mass of water produced from 4g of hydrogen and 32g of oxygen?

Back

36g of water.

Front

What are products in a chemical reaction?

Back

Substances formed as a result of a chemical reaction.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does it mean if mass is conserved in a reaction?

Back

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