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