Science 7 2020-21 Year End Review!

Front

What is the chemical formula for water?

Back

H₂O

Front

What are the two parts of a chemical reaction?

Back

Reactants and products.

Front

What does the law of conservation of mass state?

Back

The mass of the reactants must be equal to the mass of the products.

Front

What happens to the population of predators when the population of their prey decreases?

Back

The population of predators will decrease.

Front

Where do plants get the energy they need for photosynthesis?

Back

From the sun.

Front

What is photosynthesis?

Back

The process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What is a reactant in a chemical reaction?

Back

A substance that starts 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

What is the role of sunlight in photosynthesis?

Back

Sunlight provides the energy needed for the process.

Front

What is an ecosystem?

Back

A community of living organisms and their interactions with the environment.