Pure Substances and Mixtures Vocabulary

A set of vocabulary flashcards based on lecture notes covering pure substances, elements, metals, non-metals, metalloids, and mixtures.

Pure Substance

A substance that has a fixed composition.

Element

A pure substance that is made of only one kind of substance and has a fixed composition.

Metals

Elements that are usually shiny, strong, and good conductors of heat and electricity, such as Iron ($Fe$), Copper ($Cu$), and Gold ($Au$).

Non-Metals

Elements that are generally poor conductors of heat and electricity and may be solid, liquid, or gas.

Metalloids

Elements that have properties of both metals and nonmetals, such as Silicon ($Si$) and Boron ($B$).

Mixtures

Substances made by combining two or more substances without chemically changing them, where each substance keeps its own properties.

Heterogenous Mixture

A mixture in which the different substances can be seen or identified separately because the composition is not uniform, such as oil and water, salad, or sand and water.

Homogenous Mixture

A mixture in which the substances are evenly mixed so they appear as one uniform substance, such as salt water, sugar water, or air.