Bonds Study Guide
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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| Ion - | an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
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| What happens to an ion if it loses or gains and electron | loses - becomes a positive ion
gains - becomes a negative ion
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| Ionic bond - | an attraction between negative and positively charged ions
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| Polyatomic ion - | A polyatomic ion is an ion made of two or more atoms to create a polyatomic ion
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| What comes first when writing ionic formulas | metals
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| What happens to the ending of ionic compounds | add -ide
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| How do you create a ionic compound formula given oxidation numbers | Calcium chloride -
Ca+2 Cl -1
it takes two calciums to match chloride
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| Identify the properties of ionic compounds | - high melting points
- when dissolved in water can conduct electricity
- hard, brittle, crystals
- as a solid in room temperature ions do not conduct electricity well
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| Covalent bond - | Bond made between at least 2 Non-metal atoms, that share electrons
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| What's the main difference between ionic and covalent bonds | An ionic bond essentially donates an electron to the other atom participating in the bond, while electrons in a covalent bond are shared equally between the atoms. The only pure covalent bonds occur between identical atoms
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| What do covalent bonds usually form as | 2 non-metals
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| What atoms stay attracted to each other | covalent
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| What are the properties of molecular compounds | - low melting and boiling points
- do not usually conduct electricity when dissolved in water
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| What's the difference between polar and nonpolar bonds | polar - bond where electrons are unequally shared
nonpolar - bond where electrons are equally shared
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| How come some atoms in covalent bonds become slightly negative or slightly positive. | when they pull more or less strongly on shared electrons
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| How are metal atoms bonded in solid metal | most metals have 1, 2, or 3 valence electrons
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