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Science Vocabulary

Vocab for science

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
Created by: 900855rk



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