Flashcards in Chemical Reactions Deck (21):
When a compound is formed by two simpler substances
Combination or Synthesis
When a compound is broken down
Decomposition or Analysis
When a more reactive element replaces a less reactive element
Single Replacement or Single Displacement
When cations and anions exchange partners (forms insoluble precipitate)
Double Replacement, Double Displacement or Metathesis
Compound with C and H only (or C H O) reacts with oxygen to make CO2 and H2O (release of heat)
Reactions where product cannot revert back
Has equilibrium mixture of reactants and products
When is chemical equilibrium achieved?
When forward and backward reactions proceed at the same rate
Chemical reactions with absorption of heat
Chemical reactions with release of heat
When the oxidation state of an atom changes during the reaction
Oxidation or reduction: Loses electrons
Substance being oxidized is called ___
Oxidation or reduction: Gains electrons
Substance being reduced is called ___
What is the Law of Conservation of Mass?
atoms of reactant = atoms of product
What is Avogadro's number?
6.02 x 10^23
What is Molar mass?
mass of substance divided by amount (no. of moles) measured in g/mol
What is Atomic mass unit (amu)?
standard unit for indicating mass of atoms and molecules
What is formula/ molecular mass?
The formula mass of a molecule is the sum of the atomic weights of the atoms in the empirical formula of the compound