Chapter 6 - Chapter 6 1 Chemical Equation-shorthand for a chemical change using symbols and formulas instead of words 2 Reactants-materials to the left

Chapter 6 - Chapter 6 1 Chemical Equation-shorthand for a...

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Chapter 6 1. Chemical Equation-shorthand for a chemical change, using symbols and formulas instead of words 2. Reactants-materials to the left of the arrow or starting materials 3. Products-materials right of the arrow or what we end with 4. Law of Combining Volumes-at a given temperature and pressure the volume of gaseous reactants and products is in a small whole-number ratio 5. Avogadro’s Hypothesis-states that equal volumes of all gases contain the same number of molecules at fixed temperature and pressure 6. Avogadro’s Number-number of carbon-12 atoms in exactly twelve grams: 6.02 x 10^23atoms 7. Mole (mol)-amount of a substance that contains Avogadro’s number of elementary units-atoms, molecules or formula units depending on the substance 8. Formula Mass-average mass of a formula unit of a substance relative to the carbon-12 atom 9. Molar Mass-the mass of one mole of a substance –same number as formula mass molecular mass or atomic mass but with units of grams per mole 10. Molar Volume-volume occupied by one mole of any gas at STP -22.4L
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  • Spring '08
  • Hassel
  • Chemistry, Atom, substance ­same number, absolute temperature PV=nRT

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