Vocabulary for Matter and Elements

Term Definition
Matter anything that has mass and takes up space
Mass the material/stuff that matter is made up of – it can be measured
space/volume the specific area/pace that matter takes up
density D=m/v the amount of mass in a specific volume of space
atom smallest part of an element, the building blocks of all matter
electron particle of atom with a negative charge, moves around the nucleus and has an attractive force that allows it to bond with other atoms creating everything in the universe
proton particle of an atom with a positive charge located inside the nucleus
neutron particle of an atom with a neutral / no charge located inside the nucleus along with the proton.
Periodic Table large grid that identifies and classifies all of the elements by their chemical and physical properties
element the simplest substances that cannot be broken down / they make up all matter in the universe
periods/rows rows that tell how many energy levels each elements has for the electrons
groups or family/columns columns that tell how many valence electrons each element has / the number of electrons that can move on its outer shell / energy level
valence electrons the electrons that move on the outer shell / energy level of an atom
atomic number how many protons an element has inside the nucleus / usually is same # of neutrons and electrons
atomic mass the measurement of the mass for an electrons atoms
chemical property the ability of substances to combine with one another forming new and different compounds and molecules

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