Properties of Matter and Energy

Vocabulary flashcards focusing on the physical and chemical properties of matter, intensive and extensive properties, changes of matter, reactants, products, mass, and energy.

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 present, such as mass or volume.

Intensive property

A property that does not depend on the amount of matter, such as temperature, density, color, or malleability.

Properties of compounds

Characteristics of a compound that are constant and typically different from the properties of the elements that compose it.

Properties of mixtures

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

Physical change

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

Chemical change

A change that results in a change of chemical composition where original substances no longer exist and chemical bonds are broken and/or formed.

Reactant

The starting material in a chemical change.

Product

The resulting material formed in a chemical change.

Mass

A measure of the quantity of matter in an object, which is directly proportional to weight but does not change based on location.

Energy

The capacity to do work.

Law of conservation of energy

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