Chemical Bonding
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| chemical bonding | the combining of atoms to form molecules or ionic compounds
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| chemical bond | the interaction that holds atoms or ions together
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| valence electrons | an electron that is found in the outermost shell of an atom (they determine how the atom will bond)
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| 8 or 2 | the number of valence electrons which fill the energy levels
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| ionic bonds | bonds that form when electrons are transferred from one atom to another
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| ion | an atom which has given or taken an electron
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| positive ion | gives (or loses) an electron
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| negative ion | takes (or receives) an electron
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| atoms lose electrons | energy is required
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| atoms gain electrons | energy is given off
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| crystal lattice | a regular pattern in which atoms bond with each other to form a crystal structure
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| covalent bonds | bonds form when atoms share one or more pairs of electrons
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| molecules | the smallest unit of a substance that are bond together with covalent bonds...usually 2 or more elements
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| electron-dot diagrams | show how many valence electrons an atom has
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| diatomic molecules | two atoms of the same element are bonded together
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| diatomic elements | atoms willing to bond with themselves (H, O, N, and the halogens)
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| +2 | Charge of atom with 12 protons and 10 electons
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| -2 | charge of atom with 16 protons and 18 electrons
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| metallic bonds | bonds that form when positive metal ions are surrounded by free-swimming electrons which are able to adjust between ions
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| properties of ionic bonds | high melting and boiling points and they are brittle
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| properties of metallic bonds | metals can bend without breaking, they are ductile (pulled into wire), and malleable (able to be flattened)
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| energy levels | the way that electrons are organized around the nucleus
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| group numbers on periodic table | help you to know how many valence electrons there are
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| -ide | the ending of a word when it gains negative electrons
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| atomic number | the number of protons in the atom
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| noble gases | have a full set of valence electrons
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Created by:
browngdavid
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