vocabulary

Question Answer
matter anything that takes up space and hass mass
mass the material that matter is made up of.
space how much room value matter takes up
density the amount of materiel matter takes up within a specific space
atom smallest part of an element and makes them all up
electron negative charge, moves all around and are attracted to each other
proton particles of an atom with a positive charge located inside the nucleus
neutron particle of an atom with no charge inside the nucleus with a proton
periodic table large grid that has all the elements and classifies them
element can not be broken down and they make up everything in the universe
rows tells how many energy levels each element has
columns columns tell how many valence electrons each element has, the number of electrons, and energy level
valence electrons the electrons that move on the outer shell
atomic number how many protons an element has inside the nucleus
atomic mass the measurement of the mass for an elements atoms
chemical property to combine and make a whole new substance
physical property the state of matter and appearance of a substance
ionic bond when elements lose or gain a electron during bonding
covalent bond when elements share electrons during bonding
reaction elements bond with electrons to make a change or reaction
compound two or more elements combine to create a whole new substance
mixture two or more substances combine but stay the same
Nobel gases elements with 8 electrons and are in group 18
halogens bond easily with elements and have 7 valence electrons
alkali metals very reactive because they only have 1 valence electron
metalloids elements between metals and non metals that can react either way and they have 3 – 7 valence electrons
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