Chemical Reactions and Conservation of Mass PRACTICE

Front

What is the Law of Conservation of Mass?

Back

Matter cannot be created nor destroyed, it can only change form.

Front

If you have 15 grams of Baking Soda and 20 grams of Vinegar as products, what is the expected mass of the reactants?

Back

35 grams

Front

In the chemical equation CH4 + 2O2 → CO2 + 2H2O, what are CH4 and 2O2?

Back

Reactants

Front

How many atoms of carbon (C) are in C6H12O6?

Back

6

Front

How many elements are in C6H12O6?

Back

3

Front

What is a reactant in a chemical reaction?

Back

A substance that is consumed during the reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is produced as a result of the reaction.

Front

What is the significance of balancing a chemical equation?

Back

To ensure that the mass and number of atoms are conserved.

Front

What does it mean for a chemical reaction to be exothermic?

Back

It releases energy, usually in the form of heat.

Front

What does it mean for a chemical reaction to be endothermic?

Back

It absorbs energy from its surroundings.