U5 Q3

Front

What is the chemical equation for the combustion of methane?

Back

Methane + Oxygen -> Carbon Dioxide + Water

Front

How many grams of oxygen are needed to react with 100 g of methane to produce 276 g of carbon dioxide and 224 g of water?

Back

400 g

Front

How many aluminum atoms are in the compound 4Al2O3?

Back

8

Front

What is the Law of Conservation of Mass?

Back

It states that matter cannot be created or destroyed.

Front

What evidence indicates a chemical reaction when vinegar and baking soda are combined?

Back

Bubbles show that a gas is forming.

Front

Count the number of nitrogen atoms in 4NH4NO3.

Back

8

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

Define a chemical reaction.

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the significance of balancing a chemical equation?

Back

It ensures that the same number of each type of atom appears on both sides of the equation.