| front |
back |
revisions |
lasted changed by |
history |
| valence electrons |
electrons found in the outermost energy level of an atom |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
 |
| radioactive |
capable of releasing radiation
-in a radioactive atom, the nucleus can spontaneously decay and emit particles and/or light |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| proton |
a positively charged particle located in the nucleus of an atom |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| periodic table |
a chart that organizes the chemical elements based on their properties |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| nucleus |
the positively charged, dense center of an atom |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| neutron |
a particle with no charge located in the nucleus of an atom |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| mass number |
the number of protons plus neutrons in the nucleus of an atom |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| isotope |
one of several forms of the same element |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| ion |
an atom that has an electrical charge because it has gained or lost electrons |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| energy level |
a particular region where electrons can orbit a nucleus |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| element |
a pure substance that cannot be broken down into simpler substances by ordinary chemical means |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| electron dot diagram |
a diagram that shows the element symbol surrounded by dots representing valence electrons |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| electron |
a negatively charged particle that moves around the nucleus |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| atomic number |
the number of protons in the nucleus of an atom |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
| Atom |
the basic unit of matter
-the smallest particle of an element that still has all the properties of the element
-made up of protons, neutrons, and electrons which are all smaller |
0 |
laurenloveshorses99 Wed, 17 Mar 2010 18:26:56 GMT |
|
