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Science
| Question | Answer |
|---|---|
| Occurs when two atoms share electrons to create a molecule | Covalent Bond |
| When two atoms share electrons in a way that creates a 'sea' of delocalized electrons. Delocalized electrons allow the atoms to move freely. | Metallic Bond |
| Atoms that are held together by an attraction between negatively or positively charged ions. | Ionic Bond |
| As you move down the group, the other gases get denser | Group 18 |
| Forms ions with a charge of -1, they get bigger and less reactive as you move down the group | Group 17 |
| Number of electrons in an atom = | number of protons |
| Atomic number | number of protons |
| Mass number | protons + neutrons |
| atoms that belong to the same element, with the same number of protons and atomic number. However, they have more electrons, changing the atomic mass. | Isotopes |
| Horizontal placement of the periodic table | Periods |
| Vertical placement of the peridodic table | Groups |
| As they increase in size ... | there is less stability and more reaction |
| Metals | Weak hold on the outer electrons |
| Weaker hold = | less stability |
Created by:
joolz_m
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