The flashcards below were created by user
mark
on FreezingBlue Flashcards.
-
Reactions
conversion to new compounds, new combination of atoms, equation, arrow, starting materials, products, conditions
-
Balanced Equation
same number of atoms on each side, adjust coefficients, not compounds
-
Reaction Types
There are 4 general types, how atoms recombine
-
Combination reaction
- two or more elements combine, one product
-
Decomposition reaction
- one reactant splits into two or more products
-
Single replacement reaction
- one reacting element or group switches places
-
Double replacement reaction
two elements or groups switch places
-
Oxidation/Reduction
elements, metals change oxidation state, combine with oxygen, electron transfer, reduction to anion
-
Mole
Avogadro’s number, 6.02x10^23, amount of atoms, molecules, conversion factor
-
Molar Mass
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
-
Mass Calculations
Use mole fractions, molar mass to predict grams of products
-
Percent Yield
Actual yield less than theoretical, 100% yield, from mole fraction, grams or moles
-
Limiting Reactant
least amount of moles or equivalents, used up first, limits yield of product
-
Excess Reactant
Used in excess, left over, not consumed, more moles
-
Energy Changes
heat lost or gained, endothermic-heat absorbed, ΔH positive, exothermic-heat released, ΔH negative, per mole
-
Activation Energy
barrier between reactants and products, rate of reaction, transition state, where the atoms rearrange
-
|
|