Properties of Matter and Energy Flashcards

Vocabulary flashcards defining fundamental concepts related to physical and chemical properties, changes of matter, and energy principles.

Properties

Characteristics that distinguish one substance from another.

Physical Property

A property a substance displays without undergoing a change in its atomic or molecular composition.

Chemical Property

A property a substance displays that involves a change in its atomic or molecular composition.

Extensive Property

A property that depends on the amount of matter.

Intensive Property

A property that does not depend on the amount of matter.

Properties of Compounds

Characteristics that are constant and typically different from the properties of the elements that compose them.

Properties of Mixtures

Characteristics that are similar to the properties of the components that make up the mixture, but change depending on the amount of each component in the mixture.

Physical Change

A change in which the state of matter changes, but the identity and chemical composition of the matter do not change.

Chemical Change

A change that results in a change of composition, where the original substances no longer exist.

Reactant

The starting material in a chemical change.

Product

The resulting material in a chemical change.

Mass

A measure of how much matter is in an object.

Energy

The capacity to do work.

Law of Conservation of Energy

The principle stating that energy cannot be created or destroyed but can be converted from one form to another.