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Science Vocabulary
Vocab for science
| Term | Definition |
|---|---|
| State Of Matter | The three different forms that matter can appear as- solid, liquid, or gas. |
| Solid | The state of matter where the particles are packed close together and hold their shape |
| Liquid | The state of matter where particles are slightly looser and will take the shape of whatever container it is in |
| Gas | The state of matter in which the particles move freely and do not hold any shape at all. |
| Atom | The smallest piece of matter that can still be considered matter. Made up of protons, neutrons, and electrons |
| Proton | A subatomic particle that makes up part of an atom’s nucleus and has a positive charge. Number of protons in an atom determines what the element will be. |
| Neutrons | A subatomic particle that makes up part of an atom’s nucleus and has no charge. |
| Nucleus | The control center found in the center of the atom, controls the atoms physical properties. Is made up of protons and neutrons |
| Electron | Negatively charged subatomic particles that orbit the nucleus. Determines the chemical reactions with other elements |
| Electron Cloud | The cloud in which electrons lie in |
| Valence Electron | An electron in the outer shell that can form other bonds with atoms |
| Periodic Table of Elements | A table that contains every element known to man put in a certain order that is based on patterns and gives other information on the element |
| Reactivity | How likely it is for an element to react with another element |
| Atomic Number | The atomic number is the number of protons found in one atoms of the element |
| Mass Number | The rounded mass of one atoms of an element |
| Atomic Mass | the exact mass of a single atom of an atom |
| Element | a substance in which all the atoms have the same number of protons |
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