Chemistry definition of terms

1. Define the following:
1. Compound - a thing that is composed of two or more separate elements; a mixture.
2. Mixtures - is a material system made up of two or more different substances which are mixed
but are not combined chemically
3. Element - is a substance that is made entirely from one type of atom
4. Homogeneous Mixture - A mixture which has uniform composition and properties throughout.
5. Heterogeneous Mixture - is made of different substances that remain physically
separate. Heterogeneous mixtures always have more than one phase (regions with uniform
composition and properties).
6. Pure substance - are defined as substances that are made of only one type of atom or molecule,
and the purity of a substance is the measure of the extent to which a given substance is pure.
Give the characteristics of the following and give at least two examples.
a. Metals -