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Periodic table
vocab for matter and elements
| Term | Definition |
|---|---|
| matter | everything that has mass and takes up space |
| mass | the material that matter is made up of |
| volume | the amount of space that a substance or object occupies |
| density | the amount of space inside a object |
| atom | the basic unit of a chemical unit |
| electron | negative charge |
| proton | positive charge |
| neutron | no charge |
| periods | rows that tell the energy lvls |
| periodic table | a grid with all the known elements |
| groups | tell how many valence electrons it has |
| element | a simple substance that cannot be broke down |
| valence electrons | electrons that move on the outer shell |
| atomic number | how many protons a elements has in its body |
| atomic mass | measurement of mass in de elements |
| chemical property | two objects become one |
| physical property | apperence |
| iconic bond | elements either lose gain or electrons |
| covalent bond | elements share electrons |
| chemical change | elements bond together to form a specific pattern |
| compound | two or more substances combined together original |
| mixture | not original |
| noble gases | all of the elements in group #18 |
| halogens | all of the elements in group #17 |
| alkali metals | all the elements in group #1 |
| metalloiods | elements between metals |