Chemistry Study Guide (Test 2)

Chemistry Study Guide (Test 2) - Terms: Law of conservation...

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Terms: Law of conservation of matter- matter can be neither created nor destroyed. Stoichiometry- The relationship between the quantities of chemical reactants and products. Stoichiometric Coefficients- The coefficients in a balanced equation. Combustion Reaction- Burning of a fuel in oxygen. Some or all of the elements in the reactants end up as oxides, compounds containing oxygen. When the reactant is a hydrocarbon, the products of a complete combustion are CO2 and H2O. Hydrocarbon- A compound containing only C and H. Amount- Number of moles of substance. Quantity- mass of substance. Limiting reactant- when the amount determines or limits the amount of product formed. Theoretical Yield- the maximum quantity of product we calculate can be obtained from a chemical reaction. Actual Yield- the quantity of material that is actually obtained. (is less than the theoretical yield.) Percent Yield- Actual yield/Theoretical yield X 100%. Aqueous solutions- chemical systems in which water plays a major role. Solution- a homogeneous mixture of two or more substances. Solvent- the medium in which another substance (the solute) is dissolved. Strong electrolytes- substances whose solutions are good electrical conductors. They dissociate completely into ions in solution. Weak electrolytes- substances whose solutions are poor conductors of electricity. They dissociate only partially in solution. Non-electrolytes- substances that dissolve in water but do not ionize and solutions do not
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Chemistry Study Guide (Test 2) - Terms: Law of conservation...

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