Chem 101 Ch.6

conversion to new compounds, new combination of atoms, equation, arrow, starting materials, products, conditions

same number of atoms on each side, adjust coefficients, not compounds

There are 4 general types, how atoms recombine

• two or more elements combine, one product
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• one reactant splits into two or more products
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• one reacting element or group switches places
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two elements or groups switch places

elements, metals change oxidation state, combine with oxygen, electron transfer, reduction to anion

Avogadro’s number, 6.02x10^23, amount of atoms, molecules, conversion factor

grams per mole of sum of elements in compound, key conversion factor for reactions, mole ratio of coefficients from balanced equation, mole fractions in calculations

Use mole fractions, molar mass to predict grams of products

Actual yield less than theoretical, 100% yield, from mole fraction, grams or moles

least amount of moles or equivalents, used up first, limits yield of product

Used in excess, left over, not consumed, more moles

heat lost or gained, endothermic-heat absorbed, ΔH positive, exothermic-heat released, ΔH negative, per mole

barrier between reactants and products, rate of  reaction, transition state, where the atoms rearrange

here it is