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Science Vocab B-2

Science vocabulary for Unit B-2

TermDefinition
State of matter A distinct form that matter takes, such as a solid, liquid or gas
Solid A firm, solidified object or material
Liquid Having consistency like water or oil, able to flow freely and fluid
Gas An airlike fluid substance which expands freely
Atom A source of nuclear energy
Proton A subatomic particle in all atom nuclei, with a positive electric charge
Neutron A particle with no electric charge, but is bigger than a proton
Nucleus A particle with a negative electric charge with no components or structure
Electron A subatomic particle in all atom nuclei with negative electric charge
Electron cloud Where electrons are when going around the nucleus of an atom
Valence electron An outer shell of an atom that can form a chemical bond
Periodic Table of Elements
Reactivity To behave a certain way in response to something else
Atomic number The number of protons in the atom's nucleus
Mass number The total number of protons and neutrons in a nucleus
Atomic mass
Element A part of something abstract
Created by: Akuc33
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