Vocabulary for Matter and Elements

Term Definition
matter anything that has mass and takes up space
mass what makes up matter
volume how much space matter takes up
density d=m/v the amount of
neutron a part of an atom found in the nucleus with a neutral or no charge
Periodic Table a big grid of the elements organized into periods and columns by their chemical and physical properties
periods/rows tell us how many energy levels the element has
groups/columns tells number of electrons in outer that can move
element a substance that cannot be broken down any more
valence electrons the energy level of an atom often found on the outer ring
atomic number the number of protons there are in the nucleus of an atom
atomic mass how much mass an atom has
chemical property when two substances combine to form a whole new substance
physical properties appearance and state of matter of an object/substance
ionic bond a process that happens during bonding when elements lose or gain electrons
covalent bond a process that happens during bonding when elements share electrons
chemical change/reaction when elements create some kind of reaction through the attraction of electrons
compound/molecule when at least two elements chemically combine together to create a whole new substance
mixture when at least two elements physically combine together, they do not create a whole new substance
Nobel gases the most stable elements in group #18 that have 8 electrons in the outer shell
halogens very easily reactive and bond-able elements with group #1 and they want to be stable
alkali metals group #1 has very reactive elements with only one valence electron
metalloids elements with 3-7 valence electrons that can react either way due to being in between metals and non-metals

Hi there, would you like to get such a paper? How about receiving a customized one? Check it out