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AS and A Level: Inorganic Chemistry

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How did you get an A* in A level Chemistry?

Do past papers to get to grips with time management & where you can pick up marks. For some topics there are very few questions the exam can ask.

Sammy-lou

138 AS and A Level Inorganic Chemistry essays

  • Marked by Teachers essays 2
  • Peer Reviewed essays 9
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  1. Marked by a teacher

    Investigation of Enzyme Activity

    5 star(s)

    This is a very in depth and detailed account of the biochemistry of enzymes. It is written in a clear and logical manner and contains advanced theorys. …

    • Essay length: 1648 words
    • Submitted: 22/03/2010
    • Marked by teacher: (?) Brady Smith 17/07/2012
  2. Marked by a teacher

    Chemistry Module 1 revision notes - salts and redox reactions

    4 star(s)

    This report contains comprehensive notes on acid and base reactions as well as redox reactions suitable for an AS chemist. They are set out in note form, often bullet pointed,…

    • Essay length: 776 words
    • Submitted: 08/03/2012
    • Marked by teacher: (?) Brady Smith 17/06/2112
  3. Peer reviewed

    Investigation to determine the Relative atomic mass of Li

    5 star(s)

    An excellent, well set out piece of coursework. The student has clearly and logically organised the calculations and uses formulas correctly throughout, avoiding confusion and misunderstanding by not omitting explanations…

    • Essay length: 1781 words
    • Submitted: 01/04/2009
    • Reviewed by: (?) tomcat1993 21/03/2012
  4. Peer reviewed

    Deducing the quantity of acid in a solution

    5 star(s)

    Exceptional piece of coursework. Aims and background information are very clearly worded, and explains the chemistry theory behind the practical well. I would like to see the use of the…

    • Essay length: 6928 words
    • Submitted: 14/03/2009
    • Reviewed by: (?) skatealexia 11/03/2012
  5. Peer reviewed

    Determining the concentration of acid in a given solution

    5 star(s)

    Response to the question is very clearly set out, this piece of coursework is an exemplary piece for the level I would expect from A level candidates. The introduction, main…

    • Essay length: 5388 words
    • Submitted: 26/02/2009
    • Reviewed by: (?) skatealexia 21/03/2012
  6. Peer reviewed

    Finding the number of Moles of Magnesium and Oxygen in Magnesium Oxide

    4 star(s)

    The response to the question is well done. The candidate does not include a method, and the reasons for doing so are discussed below. The calculations made by the candidate…

    • Essay length: 671 words
    • Submitted: 28/04/2011
    • Reviewed by: (?) skatealexia 08/07/2012
  7. Peer reviewed

    Analysis of sulphur dioxide content in wine.doc

    4 star(s)

    This piece covers all necessary aspects such as experimental data, discussion and conclusion to varying degrees of depth and better consistency would improve its grade. Overall the candidate sets out…

    • Essay length: 1042 words
    • Submitted: 24/02/2009
    • Reviewed by: (?) tomcat1993 01/04/2012
  8. Peer reviewed

    Redox titration of copper evaluation

    3 star(s)

    Overall a good example of calculations needed for experiments. The candidate titles this essay as an 'evaluation,' but rather than an evaluation being present, there is just a set of…

    • Essay length: 463 words
    • Submitted: 25/02/2010
    • Reviewed by: (?) skatealexia 08/07/2012
  9. Peer reviewed

    Preparation of a Haloalkane

    3 star(s)

    A well written, concise investigation of average quality. All the basics are present but further explanation of procedure and experimental calculations would make this piece more detailed and clear, important…

    • Essay length: 846 words
    • Submitted: 24/02/2009
    • Reviewed by: (?) tomcat1993 03/04/2012
  10. Peer reviewed

    Assessed Practical (Skill P)

    3 star(s)

    The response to the question was done well, but the candidate had a tendency to favour one equation over the other in examining the moles of gas produced, and explained…

    • Essay length: 804 words
    • Submitted: 10/01/2009
    • Reviewed by: (?) skatealexia 27/07/2012
138 essays
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Top tips for writing reactions

  1. 1 Remember to balance the charges on any ionic compounds. The common ions are NO3-, SO42-, OH- and CO32-.
  2. 2 Do not forget to put state symbols on all of your balanced reactions.
  3. 3 Each side of the reaction must have the same number of atoms on it. Think about a balanced seesaw.
  4. 4 Your three main acids that you will use have the formulae HNO3 (nitric acid), H2SO4 (sulphuric acid) and HCl (hydrochloric acid).
  5. 5 Remember that all metal hydroxides and metal oxides are bases. This will help you when using word equations to figure out your products.

Five common mistakes students make when studying inorganic chemistry

  1. 1 When observing a gas being produced, you would not write “I saw a gas” as most gases are invisible. Instead you should write “I saw bubbling / fizzing / effervescence”.
  2. 2 When asked to write a word equation, students often write a symbol equation and vice versa. This will get you no marks in the exam.
  3. 3 - When asked for “standard conditions” people often say “room temperature”. This is not sufficient. You must say 25 degrees celsius (298K). Other standard conditions you must know are 1 atmosphere of pressure and concentrations of 1 mol dm-.
  4. 4 If you are asked to state a colour change you must state the initial and final colour.
  5. 5 Students often give group 2 metals a 1+ charge. Remember that all group two metals (Be, Mg, Ca, St, Ba, Ra) have a 2+ charge.

Five word equations that you must know

  1. 1 Acid + base / alkali = salt + water (eg HCl + NaOH becomes NaCl + H2O)
  2. 2 Metal carbonate = metal oxide + carbon dioxide (eg CaCO3 becomes CaO + CO2)
  3. 3 Metal + oxygen = metal oxide (2Mg + O2 becomes 2MgO)
  4. 4 Metal + water = metal hydroxide + hydrogen (eg 2Na + 2H2O becomes 2NaOH + H2)
  5. 5 Metal oxide + water = metal hydroxide (eg CaO + H2O becomes Ca(OH)2)

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