i need to know these things
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 formula | a chemical formula uses these chemical symbols to represent the atoms of the elements and their rates in a chemical compouns
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| subscript | a subscript is a number written to the right of a chemical symbol and slightly below
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| Ionic Bond | the force of attraction between positive and negative ions
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| covalent bond | a pair of shared electrons between two atoms is called a covalent bonds
- elements that are hear each other
- weaker than ionic bonds, can be broken easily
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| polar covalent bonds | a covalent bond in which the electron are shared unequally
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| molecule | a group of atoms held together by covalent bonds
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| metallic bonds | the equal sharing allows the electrons to move easily among the atoms.
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| What are 3 forms of carbon? | diamond, graphite, fullerene
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| Why does a mixture of sodium and chloride and water conduct electricity but a sodium chloride crystal does not? | sodium chloride is an ionic bond so it needs water to conduct electricity, water has minerals but sodium chloride doesn't have minerals so it needs water to conduct electricity.
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| What are most substances? | compounds
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| When does an atom become a positive ion? | loses an electron to another atom. Will give up or take along with its charge. Lewis dot structure. Use periodic table. Atoms with 4 valence cango either way
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| Metallic bonds make many metals | good conductors of electricity
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| oxidation nuimber | amounbt of electrons in an atom
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Created by:
sweetie13
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