| Term | Definition |
|---|---|
| Matter | Matter is everything around you. Atoms and molecules are all composed of matter. Matter is anything that has mass and takes up space. |
| Mass | Mass is made up of matter and can be measured |
| Volume | The amount of space occupied by an object measured in three dimensions, expressed in cubic units. |
| Density | The amount of mass in a specific volume of space |
| Atom | A atom is the smallest part of a element |
| Electron | Particles in a atom that have has a negative charge |
| Proton | Particles in a atom that has a positive charge |
| Neutron | Particle of an atom with a neutral/ no charge located inside the nucleus with the proton |
| Periodic Table | A large grid that classifies elements by their physical and chemical properties |
| Element | They make up all matter in the universe |
| Periods/Rows | Row that tell how many energy levels for the electrons that move around |
| Groups or families/Columns | columns that tell how many valence electrons each element has |
| Valence electrons | The electrons that move on the outer shell |
| Atomic number | How many protons an element has inside the element |
| Atomic mass | The measurement of the mass of an elements atom |
| Chemical property | A substance to combined with one or another forming new different molecules |
| Physical property | The state of matter and appearance of a substance |
| Ionic bond | When elements either gain or lose an electron during bonding |
| Covalent bond | When elements share electrons during bonding |
| Chemical change/Reaction | Elements bond together thought the attractive force of electrons creating some type of reaction and change |
| Compound/Molecule | Two or more element combined together |
| Mixture | Two or more substances combined |
| Nobel Gases | All of the elements in Group#18 |
| Halogens | All elements in Group#17 |
| Alkali Metals | All elements in Group#1 |
| Metalloids | Element between metals and non-metals |
