Science 8 – Unit Exam Study Topics

This set of flashcards covers key vocabulary terms from the Science 8 Unit Exam Study Topics, focusing on the classification of matter, its properties, and related concepts.

atom

A small particle that is a building block of matter.

compound

A type of substance containing atoms of two or more different elements chemically bonded together.

dissolve

To form a solution by mixing evenly.

element

A substance that consists of just one type of atom.

heterogeneous mixture

A type of mixture in which the individual substances are not evenly mixed.

homogeneous mixture

A type of mixture in which the individual substances are evenly mixed.

matter

Anything that has mass and takes up space.

mixture

Matter that can vary in composition.

substance

Matter with a composition that is always the same.

density

The mass per unit volume of a substance.

mass

The amount of matter in an object.

physical property

A characteristic of matter that you can observe or measure without changing the identity of the matter.

solubility

The ability of one substance to dissolve in another.

physical change

A change in size, shape, form, or state of matter in which the matter’s identity stays the same.

chemical change

A change in matter in which the substances that make up the matter change into other substances with new physical and chemical properties.

chemical property

A characteristic of matter that can be observed as it changes to a different type of matter.

concentration

The amount of substance in a certain volume.