There are three main ways to classify matter: elements, compounds, and mixtures. Elements are substances that cannot be broken down further, examples include anything on the periodic table. Compounds are substances made of two or more elements bonded together in a fixed ratio, such as NaCl or CO2. Mixtures are combinations of elements or compounds that can be combined in any ratio, and can be either homogeneous, where the composition is uniform throughout, or heterogeneous, where the composition varies. Common examples of each are provided.
3. In Chemistry one way we useIn Chemistry one way we use
isis::
Elements
Compounds
Mixtures
4. Element - a substance
that cannot be broken
down by chemical
methods
Examples- anything on
the periodic table
5. Compound - a
substance composed
of two or more
elements bonded
together, always in the
same ratio
6. Law of Definite
Proportions - a
chemical compound
always has the same
ratio of elements (by
how many and their
mass) ex. H2O has 2 hydrogen
1 oxygen