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<th width="100" scope="col">Area of chem Maths</th>
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<th width="150" scope="col">Question</th>
<th scope="col">Description</th>
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<td rowspan="2">Basic maths in chemistry</td>
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<td rowspan="3">Measurement and estimation</td>
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<td rowspan="3">Equilibrium</td>
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<td><a href="http://nrich.maths.org/public/viewer.php?obj_id=6144&amp;part=">Catalyse
that!</a></td>
<td>Explore rates of a temperature dependent reaction.</td>
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<td rowspan="2">Graphs and equations</td>
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<td rowspan="3">Units in chemistry</td>
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<td rowspan="3">Bonds and enthalpy</td>
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<td rowspan="2">Moles and molarity</td>
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<td><a href="http://nrich.maths.org/public/viewer.php?obj_id=6150&amp;part=">Conversion
sorter</a> <a href="http://nrich.maths.org/public/viewer.php?obj_id=6163&amp;part="></a></td>
<td>A molarity calculation has been written out and broken up into
several pieces. Can you use the interactive tool to rearrange the
pieces of the calculation into their logical order?</td>
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<td rowspan="3">Dilutions</td>
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<td><a href="http://nrich.maths.org/public/viewer.php?obj_id=6163&amp;part=">Dilution
series calculator</a></td>
<td>In this interactive tool a bacterial solution is diluted in
four stages. Can you work out what the final concentration will be?
Practice with new questions until you understand the process.</td>
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<td><a href="http://nrich.maths.org/public/viewer.php?obj_id=6165&amp;part=">Exact
dilutions</a></td>
<td>Save on the washing up! Using just three beakers can you create
dilutions of certain concentrations?</td>
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<td><a href="http://nrich.maths.org/public/viewer.php?obj_id=6164&amp;part=">Investigating
dilution series</a></td>
<td>Follow on from the previous question by choosing the dilutions
in each of four stages to try to match certain final targets.</td>
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<td rowspan="4">Logarithms and pH</td>
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<td><a href="http://nrich.maths.org/public/viewer.php?obj_id=6168&amp;part=">Temperature
pH</a></td>
<td>From a table of data for the dissociation constant of water at
various temperatures, work out how hot water must be to have
different pH values.</td>
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<td> </td>
<td><a href="http://nrich.maths.org/public/viewer.php?obj_id=6167&amp;part=">Mixing
pH</a></td>
<td>Use the pH formula to calculate the pH and concentrations of
dilutions.</td>
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<td> </td>
<td><a href="http://nrich.maths.org/public/viewer.php?obj_id=6169&amp;part=">Extreme
dissociation</a></td>
<td>Take the pH formula to its theoretical limits in these extreme
calculations.</td>
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<td> </td>
<td><a href="http://nrich.maths.org/public/viewer.php?obj_id=6166&amp;part=">Blood
buffers</a></td>
<td>In this extended question explore how blood buffers keep the pH
levels balanced in the human body.</td>
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<td rowspan="5">Advanced maths in chemistry</td>
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<td rowspan="1">Articles</td>
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<br></br>

<div class="framework"><br></br>
<br></br>
NOTES AND BACKGROUND<br></br>

<h3>Background articles</h3>
<ul>
<li><a href="http://nrich.maths.org/public/viewer.php?obj_id=6298&amp;part=">What
is engNRICH</a> ?</li>
<li><a href="http://nrich.maths.org/public/viewer.php?obj_id=6306&amp;part=">Teaching
suggestions for rich tasks</a> (or click on tab at top of each
problem)</li>
<li><a href="http://nrich.maths.org/public/viewer.php?obj_id=6300&amp;part=">Student
Guide to Getting Started with Rich Tasks</a></li>
<li><a href="http://nrich.maths.org/public/viewer.php?obj_id=4727&amp;part=">Mechanics
in the primary years</a></li>
<li>Other resources</li>
</ul>
<p><em>See also <a href="http://nrich.maths.org/public/viewer.php?obj_id=&amp;part=6139">bioNRICH</a>
is a joint venture between NRICH and the University of Cambridge
Transskills project.</em></p>
</div>
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