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Periodic Table
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 |