Changes in Matter and Energy Quiz

Chemical change involves the formation of new substances with different properties.

Physical changes alter the state or form of a substance without changing its chemical composition.

Chemical properties describe how substances react, such as flammability.

Density is a physical property related to mass and volume.

Burning wood involves a chemical transformation.

Energy in an isolated system remains constant and undergoes transformations.

Endothermic reactions absorb heat from the surroundings, as in photosynthesis.

Joule is the SI unit of energy, representing work or heat.

The first law states the conservation of energy in isolated systems.

Calorie is a unit of heat energy, often used in nutrition.

Specific heat is the amount of heat required to raise the temperature of a unit mass by one degree Celsius.

Deposition is the direct transition from gas to solid.

Kinetic energy is calculated based on an object's mass and velocity.

Reactants are the starting substances in a chemical reaction.

Newton's Third Law describes the conservation of momentum in reactions.