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All About Atoms!
Describes the terms needed to know for the test on Atoms 101
| Question | Answer |
|---|---|
| elements | substances that cannot be further broken down into smaller substances |
| atom | indivisible part, basic unit of chemical element |
| protons | positively charged particles of an atom, located in nucleus |
| neutrons | neutrally charged particles of an atom, located in nucleus |
| nucleus | center of the atom that holds the majority of the atom's mass |
| electrons | negatively charged particles of an atom, located outside the nucleus, |
| orbital | an electron cloud |
| ion | when an atom is charged |
| periodic table of elements | tabular display of all the elements organized by atomic numbers and such |
| elements symbol | one or two letter abbreviation deriving from the latin name of the element |
| atomic number | number of protons in the nucleus of that element |
| atomic mass | average total mass of the protons, neutrons, and electrons of that element |
| groups | the divisions of the periodic tables, (also called families), vertical columns, they have similar chemical problems and react similarly to other elements |
| luster | metallic shine |
| mallible | can be hammered, pounded, or pressed |
| ductile | can be drawn into thin sheets or wires without breaking |
| conductors | can produce heat or electricity |
| inert | do not usually react with other elements |
| semi conductors | at certain tempereatures they conduct electricity very well, at other temperatures they do not |
| bonding | combining of atoms |
| molecules | atoms in bonded clusters |
| chemical reactions | occurance when atoms bond |
Created by:
kad1998
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