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Covalent Compound?
- compounds characterized by covalent bonding
- formed between nonmetals
- exists as discrete molecules in the solid, liquid, and gas state
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Naming Covalent Compounds:
- names of elements appear in the order that they appear in the compound
- prefixes indicate the number of each kind
- only use mono on second element
- last element name ends in -ide.
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ionic compound
cation and anion
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acid?
a substance that yeilds hydrogen ions (H+) when dissolved in water
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Naming Acids: Oxyacids
- 1. Name the polyatomic ion
- 2. replace ate with ic, ite with ous
- 3. add "acid" to the name
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base?
a substance that yeilds hydroxide ions (OH-) when dissolved in water
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Hydrates?
compounds that have a specific number of water molecules attached to them
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atomic mass?
mass of an atom in atomic mass units (amu)
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average atomic mass?
weighted average of all the naturally occuring isotopes of the element
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Mole (mol)
- a unit to count numbers
- the amount of a substance that contains as many elementary entities as there are atoms
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Avogadro's number (NA)
6.022 x 1023
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Molecular mass
- mass of one mole of molecules, atoms, or other particles in grams.
- the sum of the atomic masses (in amu) in a molecule
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Formula Mass
(formula weight) of a molecule is the sum of the atomic weights of the atoms in its empirical formula
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Percent composition
- n x molar mass of an element x100
- molar mass of compoud
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