| A | B |
|---|
| compound | a combination of two or more elements |
| electrons, protons, and neutron | 3 basic parts of an atom |
| electron cloud | where the electron is found |
| mass number | add the number of protons plus neutrons |
| isotopes | atom with same number of protons, but different number of neutrons |
| salad | example of a heterogenous mixture |
| atomic number | equal to the number of protons in an atom |
| protons | positive charge; counted to identify the atomic number |
| electron | smallest part of an atom |
| neutron | no charge; about the same mass as a proton |
| electron cloud | region surrounding the nucleus in which the electrons move about |
| compound | water is an example of a ____ |
| neutron | found in the nucleus; no charge |
| element | contains only one kind of atom |
| nucleus | where protons and neutrons are found |
