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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 |