Chapter 9 BJU Word Scramble
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Term | Definition |
mole | The amount of substance contained in 6.022 x 10 23rd particles |
Avogadro's number | 6.022 x 10 23rd |
molar mass | mass of one mole of any pure substance |
structural formula | type of atoms involved, the exact composition of each molecule and the arrangement of chemical bonds |
molecular formula | types and numbers of atoms involved as they appear in the molecule |
empirical formula | tells what elements are present and give the simplest whole -number ration of atoms in the compound |
percent composition | describes the mass composition of a compound by showing what percentage of its total mass comes from each element. |
law of definite composition | the ratio of elements in a comound is constant for every particle in that compound |
stoichiometry | mathmatical relationships between the amounts of reactants and the products in a chemical reaction |
mole ratio | the coefficients from the balanced equation give the ratios between the moles of one substance and the moles of another substance |
limiting reactant | when one reactant is used up before the others which prevents more products from forming |
excess reactant | leftover substances one or more in its unchanged original states |
theoretical yield | maximum amount of product that could be created from a given amount of reactant |
actual yield | the measured amount of product at the end of a reaction usually expressed in grams of the product |
percent yield | percentage of the theoretical yield that was actually produced calculations done by taking ration of the actual yield divided by theoretical yield x 100% |
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