Ionic Compounds
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Chemical bond | -the force that holds two atoms together
-formed by the attraction of positive and negatives
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| How do atoms form an octet? | -octect: full outer energy level
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| What is a cation? How does it form? What types of elements lose electrons? | -cation: a positively-charged atom
-forms when atoms lose electrons
-metals lose electrons
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| What is an anion? How does it form? What types of elements lose electrons? | -anion: a negatively charged atom
-forms when electrons gain electrons
-nonmetals gain electrons
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| The electrostatic force that holds oppositely charged particles together in an ionic compound is an: | ionic bond
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| What is an ionic compound? | compounds that contain ionic bonds
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| Binary compounds contain: | a cation and an anion (ex: NaCl)
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| Charge of group 1 | +1
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| Charge of group 2 | +2
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| Charge of group 13 | +3
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| Charge of group 14 | +4
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| Charge of group 15 | -3
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| Charge of group 16 | -2
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| Charge of group 17 | -1
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| Charge of group 18 | no charge
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| What is a crystal lattice? | -the repeating pattern of particle packing in an ionic compound
-shap and pattern may vary based on ions
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| Properties of ionic substances | -high melting/boiling point
-solid at roomn temperature
-brittle
-molten solids conduct electricity
0awueous solutions conduct electricity
-one particle is referred to as a formula unit
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| Why do molten or aqueous solutions conduct electricity? | -in a solution of molten ions of an ionic bonds break apart (dissociation)
-solids can't conduct electricity because they have bonds intact
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| Endothemric | -take in heat
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| Exothermic | -release heat
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| The formation of ionic compounds from positive and negative ions is always | Exothermic
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| What is a formula unit? | -the very simplest ratio of ions in an ionic compound
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| What is a monotomic ion? | -elements when you can get their charge off of the periodic table
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| How to write a formula for a binary ionic compound | -name the metal
-name teh nonmetal, change ending to -ide
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