Complete lessons and practice questions for AS Chemistry Formulae, Equations, and Amount of Substances.
Packed with descriptions, full worked examples, and plenty of practice.

All practice questions have the answers included.

Topics covered:

• Balancing chemical equations
• Writing chemical equations
• Writing ionic equations
• The 5 typical reactions of an acid
• Displacement reactions
• Precipitation reactions
• Mass numbers
• Moles and Avogadro’s constant
• Calculating moles
• Calculating the number of particles in a given mass
• Calculating the mass of a given number of particles
• Reacting masses
• Working out formula and equations from mass
• Percentage and theoretical yield
• Atom economy
• Empirical and molecular formula calculations
• The ideal gas equation calculations
• Molar volume calculations
• Mass and molar concentration calculations
• Parts per million (solutions and gas)