Chemical Properties and Changes

These flashcards cover key vocabulary related to chemical properties and changes, aiding in exam preparation.

Chemical properties

Properties observed during chemical reactions that involve the destruction of a material and the formation of new substances.

Reactivity

A chemical property that indicates how readily a substance undergoes a chemical reaction.

Stability

A chemical property that refers to the tendency of a substance to remain unchanged under specified conditions.

Flammability

A property of a substance to easily ignite and produce flame when exposed to heat and oxygen.

Toxicity

The degree to which a substance can harm living organisms, especially when ingested or absorbed.

Physical change

A change that does not alter the chemical composition of a substance, such as boiling water.

Chemical change

A change that results in the formation of new substances with different chemical properties, such as rusting iron.

Pure substance

Material with a definite composition and consistent physical properties, such as melting or boiling points.

Homogeneous mixture

A mixture that has a uniform composition throughout, also known as a solution.

Heterogeneous mixture

A mixture that consists of different components or phases with varying compositions.

Element

A substance that cannot be broken down further by chemical means, composed of its own type of atoms.

Compound

A substance formed from two or more elements chemically bonded together in fixed proportions.

Phase

A homogeneous part of a system, such as solid and liquid phases in ice water.