Term | Definition |
---|---|
matter | anything with mass and takes up space |
mass | the stuff matter is made out of that can be measured |
space/volume | place that matter takes up |
density | the amount of mass in specific volume of space |
atom | smallest part of an element |
electron | the negatively charged that ed particle of an atom that travels around the outer shells of an atom |
proton | the positively charged particle of an atom located in the nucleus of an atom |
neutron | the neutral particle in the nucleus that has no charge |
Periodic Table |
a large grid that identifies and classifies all the elements by their atomic number |
element | the simplest substance that cannot be broken down |
periods/rows | rows that tell how many energy levels each element has |
groups or family/columns | columns that tell how many valence electrons each element has |
valence electrons | the electrons the move around the outer shells of an atom |
atomic number | how many protons an element has in the nucleus |
atomic mass | the measurement of the mass for an elements atoms |
chemical property | the ability of elements to combine together |
physical property | the state of matter and appearance of a substance |
ionic bond | |
covalent bond | |
chemical change/reaction | |
compound/molecule | |
mixture | |
nobel gases | |
halogens | |
alkali metals | |
metalloids |