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chem unit 3
chem midterm
| Term | Definition |
|---|---|
| electronegativity | a measure of how strongly an atom holds onto/pulls on shared electrons |
| ionization energy | the amount of energy required to remove an electron from an atom |
| metals | low electronegativity, low ionization energy, tend to lose electrons |
| nonmetals | high electronegativity, high ionization energy, tend to gain electrons |
| chemical bonds form through... | the transfer or sharing of electrons between atoms |
| bonds and compounds form to make... | atoms more stable/low energy |
| ion | an atom with an electrical charge |
| cation | an ion with a pos. charge, formed by losing electrons |
| anion | an ion with a neg. charge, formed by gaining electrons |
| monatomic ions | ions consisting of a single atom |
| metals generally lose what? | their valence electrons |
| nonmetals generally gain what? | electrons to fill their valence shell |
| monatomic ions | nonmetals that have gained electrons |
| type1 metal cations (metals in groups 1A, 2A, 3A) | lost electrons, form an ion with a specific charge |
| type 2 metal cations | all other metal elements that have lost electrons, form ions w different charges |
| polyatomic ions | 2 or more atoms bonded together that have charge |
| properties of ionic compounds | ionic bonds are strong, solid at room temp. w/ high melting points, conduct electricity when dissolved in water, form latice crystal structure |
Created by:
elenarrogers
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