the smallest particle of an element
a combination of two or more atoms
the force that holds two atoms together
a substance that cannot be broken down into other substances by chemical or physical means
a substance made of two or more elements chemically combined
the average mass of one atom of an element
a chart of the elements showing the repeating pattern of there properties
the central core of an atom containing protons and neutrons
a small, positively charged particle in the center of and atom
a small particle in the nucleus of an atom,with no charge (neutral)
a tiny, negatively charged particle that moves around the nucleus of an atom
atomic mass unit (amu)
a unit used to measure the mass of particles in atom
the number of protons in the nucleus of an atom
a one or two letter represantation of an element
elements in the same vertical column of the periodic tabel
(also called group)
a horizontal row of elements in the periodic table
one of the electrons farthest away from the nucleus of the atom
involved in chemical reactions
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.