Elements, Compounds, Mixtures

atomThe smallest part into which an element can be divided and still

maintain its properties

elementAny substance that cannot be broken

down into a simpler substance

compoundA substance that is formed by the combination of elements

using fixed amounts

moleculeThe smallest physical unit of a

substance that can exist independently

mixtureWhen two or more

substances are not joined chemically

H2OKnow the formula for

water

solutionA homogeneous mixture of

two or more substances

Ways to Separate Mixtures1. Sifting-Using a sifter to separate two items. One item is bigger than the other.

Ways to Separate Mixtures2. Magnetism-using a magnet to separate a magnetic object and a non-magnetic object

Ways to Separate Mixtures3. evaporation-boiling the liquid off of a substance

Ways to Separate Mixtures4. filtration- using a filter to separate a mixture. One object is usually larger than the other