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Periodic Table

Vocabulary for Matter and Elements

TermDefinition
matter Anything that takes up space and has mass.
mass Stuff that makes up matter.
space/volume the specific area place that matter takes up.
density the amount of mass in a specific volume of space
atom smallest part of an element.
electron particle of atom with a negative charge, moves around the nucleus and has an attractive force.
proton particle of an atom with a positive charge located inside the nucleus.
neutron particle of an atom.
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 broke down/ they make up all matter in the universe.
periods/ rows rows that tell how many energy levels each has for the electrons to move around.
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 numbers how many protons an element has inside the nucleus/ usually is same number of nuetrons and electrons.
atomic mass the measurement of the mass for an element.
chemical property the ability of substances to combine with one another forming new and different compounds and molecules.
physical property the state of matter and appearance of a substance.
ionic bond when elements either lose or gain an electron during bonding.
covalent bond when elements share electrons during bonding.
chemical change/ reaction elements bond together through the attractive force of electrons creating some type of reaction or change.
compound/ molecules two or more elements combined.
mixture two or more substances.
nobel gases all of the elements in group 18 they are the most stable elements because they have eight electrons in their outer shell
halogens all of the elements in group 7 they are very reactive bonding easily with elements in group 1 because they have seven valence electrons and want to be stable.
alkali Metals all of the elements in group 1 they are very reactive because they have only one valence electron
metalloids elements between metals and non- metals that can react either way, they have 3- 7 valence electrons
Created by: blakejude
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