Science Concepts and Definitions

Front

Conservation of mass

Back

Mass is not created or destroyed in chemical reactions.

Front

Chemical reactions

Back

When a substance combines with another to form a new substance.

Front

Physical change

Back

Changes in the texture, shape, temperature of a substance or a change in the state of matter.

Front

Endothermic

Back

Energy is absorbed from the environment during a reaction.

Front

Exothermic

Back

Energy is transferred to the environment during a reaction.

Front

Photosynthesis

Back

Chemical reaction by plants to combine water and carbon dioxide to form carbohydrates (sugars) and give off oxygen.

Front

Nutrients

Back

Chemical substances that living organisms need to survive.

Front

Adapted

Back

Special features that help to perform a function.

Front

Xylem

Back

Transports water in plants.

Front

Phloem

Back

Transports sugars in plants.