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Unit b-2 vocab
For the study guide
| Term | Definition |
|---|---|
| State of matter | solid liquid or gas |
| solid | When particles have low energy and have a high pull |
| liquid | when particles have medium pull and energy |
| gas | When particles have high energy and low pull |
| atom | Smallest unit of mass makes up everything |
| proton | A particle in an atom with a posotive charge |
| neutron | A particle in an atom with no charge |
| nucleas | core of the atom |
| electron | outside the atom has negative charge |
| electron cloud | cloud of electons orbits the nucleas |
| valence electron | Electon formed from hydorgen or carbon |
| periodic table | Table with all of the scientific elements on it |
| reactivity | How the element reacts with certain elements |
| atomic number | The number given on the periodic table |
| mass number | The mass goven on the element on the periodic table. Is exact |
| atomic mass | neutrons plus protons |
| element | something that is made up of certain kinds of atoms |