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A-Level Chemistry


Question: Chemistry Extended Experimental Investigation EEI Year 11-12
Graded A

Abstract:
The effect of water distillation on heat liberated from the combustion of ethanol in a calorimeter was measured in order to investigate the following hypothesis:
That heat energy produced from the combustion of ethanol will be reduced in direct proportion to the percentage of water present due to the latent heat of vaporisation (entropy increase) effect of the water.

(Content equivalent to UK A-Level)

Answer: This extended experimental investigation covers the effect of water when mixed with...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: 70%
  • Words: 2646
  • Date submitted: September 05, 2014
  • Date written: August, 2014
  • References: Yes
  • Document type: Essay*
  • Essay ID: 6026

Question: The effect of Temperature on the Rate of Reaction between a Magnesium Ribbon and Hydrochloric Acid.

Answer: The aim of the experiment is to see what effect temperature has...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: 64%
  • Words: 2328
  • Date submitted: April 17, 2009
  • Date written: Not available
  • References: No
  • Document type: Essay*
  • Essay ID: 1424

Question: Determining the concentration of copper(II) ions: Using various analytical techniques.

Answer: There are various analytical techniques that can be employed to detect substances...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: 63%
  • Words: 10000
  • Date submitted: April 16, 2009
  • Date written: Not available
  • References: No
  • Document type: Essay*
  • Essay ID: 1401

Question: Experiment title: Halogen-halide reactions in aqueous solution. Objective

· To investigate the order of oxidizing ability of the halogen Cl2, Br2 and I2 in aqueous solution.
· To observe the reaction between the halogen-halide in aqueous solution
· To study the characteristic of Group 17.
· Formulate concepts of validation of data and experimental design.

Answer: The halogens have simple molecular structures consisting of diatomic covalent molecules (X2)...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: 61%
  • Words: 1132
  • Date submitted: April 17, 2009
  • Date written: Not available
  • References: Yes
  • Document type: Essay*
  • Essay ID: 1428

Question: Metals, Non-metals, and Metalloids.

Answer: Metals, nonmetals, and metalloids have very relative properties. All known metals have...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: 60%
  • Words: 675
  • Date submitted: April 16, 2009
  • Date written: Not available
  • References: Yes
  • Document type: Essay*
  • Essay ID: 1415

Question: How did Chemistry begin?

Answer: Alchemists The alchemists of the 16th and 17th century tried to change...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: 60%
  • Words: 1172
  • Date submitted: April 16, 2009
  • Date written: Not available
  • References: No
  • Document type: Essay*
  • Essay ID: 1408

Question: Effect Of An Inhibitor Such As Copper Sulphate On The Activity Of Catalase

Answer: The aim of this investigation is to find out how different concentrations...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: 60%
  • Words: 1052
  • Date submitted: April 16, 2009
  • Date written: Not available
  • References: No
  • Document type: Essay*
  • Essay ID: 1403

Question: Biology Lab report: Investigation as to why caffeine affects an organism’s physiology and neural function

Answer: Abstract The objective of this study was to investigate the effects of...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: Not available
  • Words: 2351
  • Date submitted: September 15, 2015
  • Date written: November, 2013
  • References: Yes
  • Document type: Essay*
  • Essay ID: 6775

Question: Chemistry Lab Report: How much iron is in a sample of iron (II) ammonium sulfate?

Answer: Abstract – In a titration of iron (II) ammonium sulfate solution with...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: Not available
  • Words: 2372
  • Date submitted: September 15, 2015
  • Date written: November, 2013
  • References: No
  • Document type: Essay*
  • Essay ID: 6774

Question: The effect of water temperature on the respiration rate of yeast.
B Grade.

Answer: Abstract: This experiment tested the amount of carbon dioxide that was released...


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  • Subject: Chemistry
  • Course: Chemistry
  • Level: A-Level
  • Year: Not applicable
  • Mark: Not available
  • Words: 3530
  • Date submitted: September 02, 2014
  • Date written: November, 2012
  • References: No
  • Document type: Essay*
  • Essay ID: 6005

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