is an element?
An element is a substance made up of just
one type of atom.
Elements are pure substances
that cannot be split up into a simpler substance.
There are just over 100 elements that make
up all matter.
is a compound?
A compound is a substance
made up of the atoms of two or more different
elements that have been joined together
from a chemical reaction. Most substances
around us contain more than one element.
• Mixtures can contain
solids, liquids and gases. A mixture can
contain solids, liquids and gases.
• Mixtures contain substances
that are not chemically combined. The substances
in a mixture are not chemically joined together.
• There are many different
ways of separating mixtures. Some mixtures
of solids and liquids can be separated by
filtration. Filtration is one method of
separating solids from mixtures. It depends
on the difference in the size of particles in
are several methods to separate mixtures:
Chromatography is a way to separate a mixture
of different colors of dyes.
Filtration is a way to separate insoluble
solids from liquids.
Distillation is a way to separate a soluble
solid from a liquid or a mixture of liquids.
Fractional distillation is a way to separate
a mixture of liquids that have different
Evaporation is a way to separate soluble
solids from their solvent.
- Foam is a mixture
of a gas in a liquid.
- An aerosol is a mixture of a liquid
in a gas.
- Alloyed is a mixture of metals.
- Filtration is the process of separating
a mixture by passing it through a filter.
- The filtrate is the part of a mixture
that passes through a filter.
- Residue is the part of a mixture that
has been trapped by the filter.