Foundations in AS Chemistry

AS Chemistry Bundle on Foundations in Chemistry. Suitable for AQA, OCR and Edexcel

The lessons include:

Lesson 1: Relative Masses

1. Define the terms relative atomic mass, relative formula mass and relative molecular mass
2. Calculate the relative formula mass and relative molecular mass of compounds and molecules

Lesson 2: Ions and the Periodic Table

1. To predict the ionic charge of ions based on the position of the element in the periodic table
2. To recall the names of common atomic and molecular ions
3. To be able write the formula of ionic compounds

Lesson 3: The Mole and The Avogadro Constant

1. Know that the Avogadro constant is the number of particles in a mole
2. Calculate the number of moles present in a given mass of an element or compound using the mole equation
3. Rearrange the mole equation to calculate either the number of moles, Mr or mass of an element or compound

Lesson 4: Moles and Equations

1. Know how to balance symbol equations
2. Calculate the moles of reactants or products based on chemical equations and mole ratios
3. Calculate the masses of reactants used or products formed based on chemical equations and mole ratios

Lesson 5: Ideal Gas Equation

1. Recall the ideal gas equation
   2)Understand the properties of an ideal gas
2. Rearrange the ideal gas equation to determine either pressure, temperature, moles or volume

Lesson 6: Empirical and Molecular Formulae

1. Understand what is meant by ‘empirical formula’ and ‘molecular formula’
2. Calculate empirical formula from data giving composition by mass or percentage by mass
3. Calculate molecular formula from the empirical formula and relative molecular mass.

Lesson 7: Percentage Yield and Atom Economy

1. Know how to balance symbol equations
2. Calculate atom economy and percentage yield from balanced symbol equations
3. Calculate the masses and moles of products or reactants from balanced symbol equations

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