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periodic table
vocabulary for matter and elements
Question | Answer |
---|---|
matter | anything that takes up space |
mass | the stuff that matter is made up of |
volume | how much room matter takes up |
density | the amount of stuff matter takes up a specific space |
atom | smallest part of an element |
electron | particle of an atom that surrounds the nucleus |
proton | an atom that is positively charged |
neutron | an atom located in the nucleous |
periodic table | a large grid that classifies all of the elements |
periods/rows | rows that tell how many energy levels each element has |
groups/columns | columns that tell how many valence electrons each element has |
valence electrons | the electrons that move on the outer shell |
atomic number | how any protons an element has inside the necules |
atomic mass | the measurement of the mass for an elements atoms |
chemical property | the ability of substances to combine with each other forming a whole new substance |
physical property | the state of matter and appearances of a substance |
ionic bond | when elements either lose or gain an electron during bonding |
covalent bond | when elements share electrons |
chemical change/reaction | elements bond together through the attractive force of electrons |
compound/molecule | two or more elements combine together in a specific ratio/pattern creating a whole new substance |
mixture | two or more substances combined |
nobel gases | all of the elements in group 18 |
halogens | all of the elements in group 17 |
alkali metals | all of the elements in group 1 |
metalliods | elements between metals |
endothermic | chemical change that absorbs energy |
exothermic | chemical reaction that releases energy |