Solved Problems In Chemistry

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You will find a 1 page template (pdf) to use for problem solving here.

All AUS-e-TUTE's tutorials use this heuristic "stopgops" procedure to solve problems.

Step 2: Think about how your unknown (the thing you need to find) is related to the information you have been given by the scientific principle(s) you have decided on.

Step 1: Underneath the list of data you have already written down, write down a You can always add more steps later if you need to, or ignore ones that you don't use.

If so, write this into the appropriate step: If you have prepared a good game plan above, all you should have to do is follow each step you have written.

Or do you need to use a Data Sheet to look up a physical/chemical constant?

, for example, do you need to use the Periodic Table to find relative atomic masses?

How the unknown is related to the knowns given in the question will determine what you write next to each number in your list of steps.

This also means checking any assumptions that you may have made.

Before you laugh, I must tell you that one of the many complaints markers have about student exam papers is that the students have NOT answered the question that was asked ... Check that you have the appropriate number of significant figures, for example, if you have been given p H = 1.32, the concentration of hydrogen ions is NOT going to be 0.047863! There are some spelling mistakes examiners probably won't care about, for example there/their/they're, where/wear etc But some spelling mistakes are guaranteed to lose you marks, for example, alkane/alkene/alkyne (huge difference in reactivity for one thing! Step 5: Check that the scientific principles you applied are valid for this problem.

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