Term |
Definition |
proton |
positively charged part of an atom |
neutron |
part of an atom that has no charge |
electron |
negatively charged part of an atom |
nucleus |
center of an atom; contains protons and neutrons |
atoms |
the smallest particle that makes up an element
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Latin |
Some of the elements are named in this language. |
atomic number |
the number of protons in an element's nucleus |
chemical symbol |
usually consists of one or two letters. |
atomic mass |
used to measure the particles in atoms |
families |
Elements in the same ________ have similar characteristics. There are 18 of these on the periodic table. |
periods |
Elements in the same ______ have different properties. There are seven in the periodic table. |
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