Mychem

Notes, explanations and resources for KS3, GCSE and A level Students of chemistry

Subcategories from this category:

Atoms and bonding

Electronegativity

 Electronegativity values allow us to predict the direction and strength of dipoles which might exist in molecules
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Ionic Bonding

Conductivity when molten  Background ​When a metal combines with a non metal - the compound formed is usually ionic. Ionic compounds tend to form giant lattices. Ionic lattices have some distinctive physical properties: High melting points Conduct an electric current when molten​ They from crystals Many will dissolve well in water The vid...
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The Alkali metals

​Group 1 of the periodic table contains an entertaining family of reactive metals Caesium is rather more reactive  
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Formulae of compounds

A simple way to work out the formula of an ionic compound 
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Redox Chemistry

redox intro

  • Extracting Aluminium
  • Making Iron
  • Chemistrysetting
  • Laser
  • Extracting Aluminium

    • Aluminium is a more reactive than carbon
    • Electrolysis is used to extract it
    • Aluminium ions are reduced to aluminium atoms

    see full presentation

  • Making Iron

    David Fowkes has been teaching chemistry for over 30 years. His teaching career started in at King Edward VI School Southampton. Subsequent posts as Head of Chemistry then Head of Science in Framlingham College and then Rossall School enabled him to develop further resources and techniques for the teaching of chemistry. David was one of the content authors for the highly acclaimed Multimedia Science School by Plato learning and he has published a number of GCSE and A level chemistry texts for Pearson and Nelson Thornes ( now part of Oxford University Press). His current project is the authoring and production of the Philpot Education chemistry support site for students of the International Baccalaureate. David works part-time as Director of the IB Institute at St.Clare's, Oxford.
  • Making Electricity

    Rachael Fowkes has been teaching Biology for over 20 years. Although she has taught at GCSE and junior science levels, she now specialises in the teaching of biology A level and IB . Rachael works part-time as a Biology Lecturer at Brockenhurst College - a post which she has held since 2004. She is also now a progress manager. Rachael has worked as an examiner for Biology A Level for a variety of examining boards including AQA, OCR and WJEC.
  • Chemistrysetting

  • Laser

Metal displacement reactions The first section of this video shows three metal displacement reactions magnified and speeded up. For each reaction: ​ decide which metal is oxidised decide which metal is reduced write two half equations to represent these changes
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Intermolecular forces

Before tackling this topic make sure you are  able to: ​ ​ ​ explain the difference between inter molecular and intra molecular forces.  use electronegativity values  to work out dipoles within molecules use ideas about molecular shapes and dipoles to predict whether or not a molecule is polar.  Trends in Boi...
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Atomic structure

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Your carbon footprint

reducing your carbon footprint Although this is aimed at students of the IB diploma - it is relevant to all .... Enter your text here ...
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Acids, Bases, pH, Indicators and Buffers

Background  ​This topic is mostly about equilibria so it is important for students to understand that concept first. Before tackling this topic make sure you : ​ understand dynamic equilibria can write and manipulate equilibrium expressions for a range of reactions . can estimate the pH value of a solution using universal indicator  ...
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Methane, Ammonia and Water

​The images in this slideshow here show how we can account for the way in which electrons are shared between atoms. This produces a full outer shell of electrons for the atoms involved and results in the formation of stable molecules.  Use the three buttons to the top to see three different representations of the molecules
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