Substances, Compounds & Mixtures

Substances, Compounds & Mixtures How everything is put together. Substances Matter that has the same composition and properties throughout is called a

substance. When different elements combine, other substances are formed. Substances Picture from

http://www.ilpi.com/msds/ref/gifs/statesofmatter.gif Contains only one particle Can exist in 3 states of matter Can be elements or compounds

Mixtures A mixture is a combination of two or more substances where there is no chemical combination or reaction.

A mixture is a combination of two or more substances where there is no chemical combination or

reaction. Mixtures combine physically in no specific proportions. They just mix.

Solids, liquids and gases can be combined to create a mixture. Mixture Types MIXTURES MAY BE HOMOGENEOUS OR

HETEROGENEOUS Homogeneous Mixtures Homogeneous Mixtures: The prefix: "homo"indicates the same Have the same uniform appearance and

composition throughout Solutions SOLUTIONS are homogeneous mixtures What is a solution? A solution is a

mixture of two or more substances. At least two substances must be mixed in order to have a solution

A solution has two parts The substance in the smallest amount and the one that DISSOLVES is called the SOLUTE

The substance in the larger amount is called the SOLVENT - it does the dissolving IN most common instances water is the solvent

Examples of solutions Salt water Clean Air Vinegar Heterogeneous Mixtures: The prefix: "hetero"- indicates

difference A heterogeneous mixture consists of visibly different substances or phases Two or more parts can be seen Examples: Pizza

Sandwich Chex Mix Suspensions A SUSPENSION is a heterogeneous mixture of large particles These particles are visible

and will settle out on standing Examples of suspensions are: fine sand or silt in water or Italian salad dressing