| Term | Definition |
|---|---|
| Matter | anything that takes up place. |
| Mass | The material that matter is made up of. |
| Density | D=/v the amount of mass in a volume place. |
| Electron | Particle of an atom with a negative charge, moves around the nucleus and has a attractive force. |
| Atom | smallest part of a element and building block of matter. |
| Periodic table | Large grid that identifies and classifies all of the elements by their chemical and physical properties. |
| Proton | Particle of an atom with a positive charge located inside of the nucleus. |
| Neutron | particle of an atom with a neutral / no charge located inside the nucleus. |
| Elements | The simplest substance that cannot be broken down / they make up their chemical and physical properties. |
| Groups or Family/ Columns | Columns that tell how many valence electrons each element has / energy level |
| Periods/Rows | rows that tell how many energy levels each elements has for electrons to move around. |
| Valence Electrons | the electrons that move on the outer shell / energy level. |
| Atomic number | how many protons an elements has inside the nucleus usually is the same number of neutrons and electrons. |
| Atomic mass | the measurement of the mass for an elements atoms. |
| Chemical property | the ability of substances to combine with one another forming new and different compounds and compounds. |
| Physical properties | the state of matter and appearance of a substance. |
| Iconic bond | when elements either lose or gain an electrons during bonding. |
| Chemical change / reaction | elements bond together through the attractive force of electrons creating some type of reaction and change. |
| Compounds and Molecule | two or more elements combined together in a specific ratio/pattern creating a whole new substance |
