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Unit B-2, Atoms
| Question | Answer |
|---|---|
| state of matter | solid, liquid, gas, plasma |
| solid | rigid structure, strong force of attraction, low particle energy |
| liquid | medium FOA, medium PE |
| gas | low FOA, high PE |
| atom | The smallest element of matter that still has the properties of that element |
| proton | positive charge, found in neucleus |
| neutron | neutral charge, found in neucleus |
| neucleus | center of the atom |
| electron | negative charge, orbits the neucleus |
| electron cloud | Where an electron could be at any given time |
| valence electrons | outer shell electrons |
| Periodic Table of Elements | an organization of the elements |
| reactivity | how well it reacts with other elements |
| atomic number | number of protons |
| mass number | protons + neutrons |
| atomic mass | weighted average mass of an atom of an element |
| element | A substance with the same number of protons |
Created by:
akotaru20
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