Is Matter Around Us Pure?

These flashcards cover fundamental concepts of matter, pure substances, and their classifications.

Matter

Anything that has mass and occupies space.

Pure Substances

Substances made up of only one type of particles, including elements and compounds.

Elements

Pure substances that cannot be broken down into simpler substances by chemical reactions.

Compounds

Substances made of two or more elements chemically combined in fixed proportions.

Metals

Elements that are typically lustrous, malleable, ductile, and good conductors of heat and electricity.

Non-metals

Elements that are typically non-lustrous, brittle, poor conductors of heat and electricity.

Metalloids

Elements that have properties intermediate between metals and non-metals.

Homogeneous Mixture

A mixture with a uniform composition throughout.

Heterogeneous Mixture

A mixture with a non-uniform composition.

Solution

A homogeneous mixture of two or more substances.

Colloids

Heterogeneous mixtures with particle size ranging between 1 nm and 1000 nm.

Suspensions

Heterogeneous mixtures where the solute particles are visible and settle over time.

Tyndall Effect

The scattering of light by colloidal particles, making the path visible.

Concentration of a Solution

The amount of solute present in a given volume or mass of solution.

Physical Change

A change that does not alter the chemical composition of a substance.

Chemical Change

A change that results in the formation of new chemical substances.

Alloys

Mixtures of two or more metals or a metal and a non-metal.