Unit 2: Classification of Matter
Physical Science
Steinbrink

Matter

Anything that has mass and takes up space. Chemistry is the study of this!

Mixture

Most common type of matter, two or more substances having separate properties

Homogeneous Mixture

A mixture that is evenly mixed, the same throughout, can be separated by physical means

Heterogeneous
Mixture

Any type of mixture that is made up of different substances in different proportions, not evenly mixed.

Suspension

A Heterogeneous mixture in which one substance has groups of particles too heavy to remain mixed, eventually settling occurs.

Gel

A colloid in which a liquid is dispersed throughout a solid

Pure Substances

The type of matter chemists are most interested in, having identifiable properties, made up of units that are all alike.

Colloid

A mixture that can look like a solution but the different substances are held up in suspension, not truly dissolved, will scatter a light beam.

Compound

Pure substance made up of two or more types of atoms in a specific ratio, cannot be separated by physical change, has a formula.

Elements

Simplest substance of all, atoms are all alike with the same number of protons, cannot be separated, has a symbol, found on periodic table.

Emulsion

A colloid in which two liquids are dispersed but not truly dissolved.

Foam

A colloid in which a gas is dispersed throughout a liquid or a solid.

Solution

Any homogeneous mixture, particles of a solute are completely mixed between particles of a solvent.

Alloy

Solution of two or more metals with unique properties but not chemically bonded into a compound.