Problem Solving In Chemistry

Problem Solving In Chemistry-80
When you complete the last step in your game plan, you should be looking at the solution to the problem. Step 1: Have you actually answered the question that was asked? Check this by asking yourself this question, "If I gave my solution to the problem to someone who had not read the problem, could they guess what question had been asked? If you rearranged a formula, check that you did this correctly, for example, if c=n/V then V=n/c Check that you have used the correct units and that the units used are all consistent. Substitute values into equations as you go, step by step, and calculate each value as it appears. Before you call this problem "finished" and move onto the next problem, take some time to think about your solution in relation to the question that was asked. Does your solution provide an answer to the question that was asked? Check that you have used the correct stoichiometric (mole) ratio Check that you used the correct formula (equation) in each calculation.

When you complete the last step in your game plan, you should be looking at the solution to the problem. Step 1: Have you actually answered the question that was asked? Check this by asking yourself this question, "If I gave my solution to the problem to someone who had not read the problem, could they guess what question had been asked? If you rearranged a formula, check that you did this correctly, for example, if c=n/V then V=n/c Check that you have used the correct units and that the units used are all consistent. Substitute values into equations as you go, step by step, and calculate each value as it appears. Before you call this problem "finished" and move onto the next problem, take some time to think about your solution in relation to the question that was asked. Does your solution provide an answer to the question that was asked? Check that you have used the correct stoichiometric (mole) ratio Check that you used the correct formula (equation) in each calculation.

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So, before you begin, you might like to go to the bathroom, get something to drink and/or eat, and get an extra cushion for your chair .... 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.This site stores nothing other than an automatically generated session ID in the cookie; no other information is captured.In general, only the information that you provide, or the choices you make while visiting a web site, can be stored in a cookie. and read each step in your game plan carefully, making any additions as required, BEFORE you continue implementing the game plan. You can check whether your solution seems reasonable in lots of ways, here are a few: Check that chemical equations are correctly balanced. If you find there are gaps in your game plan, things you find you still need but haven't included, it's time to Pause! Go back to the start of the problem solving process! One of the most common mistakes students make on exam papers is that they incorrectly, or neglect to, convert units resulting in an answer that is out by orders of magnitude (factors of 10). , 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. 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?

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