AQA A Level Chemistry復習筆記1.3.4 The Ideal Gas Equation
The Ideal Gas Equation Kinetic theory of gases The kinetic theory of gases?states that molecules in gases are constantly moving The theory makes the following assumptions: That gas molecules...
AQA A Level Chemistry復習筆記1.3.3 Reacting Volumes
Volumes & Concentrations of Solutions The?concentration?of a solution is the amount of?solute?dissolved in a?solvent?to make 1 dm3?of??solution The solute is the substance that dissolves...
AQA A Level Chemistry復習筆記1.3.2 Reacting Masses
Reacting Masses The number of moles of a substance can be found by using the following equation: It is important to be clear about the type of particle you are referring to when deali...
AQA A Level Chemistry復習筆記1.2.6 Hydrated Salts
Water of Crystallisation Water of crystallisation?is when some compounds can form?crystals?which have?water?as part of their structure A compound that contains water of crystallisation is ca...
AQA A Level Chemistry復習筆記1.2.5 Atom Economy
Atom Economy The atom economy of a reaction shows how many of the atoms used in the reaction become the desired product The rest of the atoms or mass is wasted It is found directly fr...
AQA A Level Chemistry復習筆記1.2.4 Reaction Yields
Percentage Yield In a lot of reactions, not all reactants react to form products which can be due to several factors: Other reactions take place simultaneously The reaction does not go to?co...
AQA A Level Chemistry復習筆記1.2.3 Balanced Equations
Deducing Formulae of Compounds Ionic?compounds?are formed from a?metal?and a?non-metal?bonded together Ionic compounds are electrically neutral; the positive charges equal the negative charg...
AQA A Level Chemistry復習筆記1.2.2 Empirical & Molecular Formula
Empirical & Molecular Formulae The?molecular?formula?is the formula that shows the?number?and?type?of each atom in a molecule E.g. the molecular formula of ethanoic acid is C2H4O2 ...
AQA A Level Chemistry復習筆記1.1.7 Ionisation Energy: Trends & Evidence
Ionisation Energies: Equations The?second ionisation energy?(IE2) is the energy required to remove the second mole of electrons from each +1 ion in a mole of gaseous +1 ions, to form one mol...
