AQA A Level Chemistry复习笔记1.4.2 Ionic Bonding
Ionic Bonding As a general rule, metals are on the left of the periodic table and nonmetals are on the right-hand side Ionic bonding involves the transfer of electrons from a metallic elemen...
AQA A Level Chemistry复习笔记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复习笔记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复习笔记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复习笔记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复习笔记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复习笔记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复习笔记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复习笔记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 ...
