Challenge Level

Investigate the effects of the half-lifes of the isotopes of cobalt on the mass of a mystery lump of the element.

Challenge Level

Can you work out how to produce the right amount of chemical in a temperature-dependent reaction?

Challenge Level

Put your visualisation skills to the test by seeing which of these molecules can be rotated onto each other.

Challenge Level

Ever wondered what it would be like to vaporise a diamond? Find out inside...

Read about the mathematics behind the measuring devices used in quantitative chemistry

Fancy learning a bit more about rates of reaction, but don't know where to look? Come inside and find out more...

Challenge Level

Think about the bond angles occurring in a simple tetrahedral molecule and ammonia.

Challenge Level

Explore the possibilities for reaction rates versus concentrations with this non-linear differential equation

Challenge Level

Work out the numerical values for these physical quantities.

Challenge Level

This is the area of the advanced stemNRICH site devoted to the core applied mathematics underlying the sciences.

A brief outline of the mathematical issues faced by chemistry students.

Challenge Level

Find out why water is one of the most amazing compounds in the universe and why it is essential for life. - UNDER DEVELOPMENT

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There has been a murder on the Stevenson estate. Use your analytical chemistry skills to assess the crime scene and identify the cause of death...

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Get some practice using big and small numbers in chemistry.

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Do each of these scenarios allow you fully to deduce the required facts about the reactants?

Challenge Level

We all know that smoking poses a long term health risk and has the potential to cause cancer. But what actually happens when you light up a cigarette, place it to your mouth, take a tidal breath. . . .

Challenge Level

Unearth the beautiful mathematics of symmetry whilst investigating the properties of crystal lattices

Challenge Level

Explore the distribution of molecular masses for various hydrocarbons

Challenge Level

Explore how can changing the axes for a plot of an equation can lead to different shaped graphs emerging

Challenge Level

Investigate why the Lennard-Jones potential gives a good approximate explanation for the behaviour of atoms at close ranges

Challenge Level

Estimate these curious quantities sufficiently accurately that you can rank them in order of size

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In this question we push the pH formula to its theoretical limits.

Challenge Level

Use your skill and knowledge to place various scientific lengths in order of size. Can you judge the length of objects with sizes ranging from 1 Angstrom to 1 million km with no wrong attempts?

Challenge Level

Here are several equations from real life. Can you work out which measurements are possible from each equation?

Challenge Level

Investigate the mathematics behind blood buffers and derive the form of a titration curve.

Challenge Level

What does the empirical formula of this mixture of iron oxides tell you about its consituents?

Challenge Level

From the atomic masses recorded in a mass spectrometry analysis can you deduce the possible form of these compounds?

Challenge Level

Investigate the molecular masses in this sequence of molecules and deduce which molecule has been analysed in the mass spectrometer.

Challenge Level

Investigate some of the issues raised by Geiger and Marsden's famous scattering experiment in which they fired alpha particles at a sheet of gold.

Challenge Level

Many physical constants are only known to a certain accuracy. Explore the numerical error bounds in the mass of water and its constituents.

Challenge Level

Explore the lattice and vector structure of this crystal.

An introduction to a useful tool to check the validity of an equation.

An article about the kind of maths a first year undergraduate in physics, engineering and other physical sciences courses might encounter. The aim is to highlight the link between particular maths. . . .

Challenge Level

chemNRICH is the area of the stemNRICH site devoted to the mathematics underlying the study of chemistry, designed to help develop the mathematics required to get the most from your study. . . .

Challenge Level

Are these statistical statements sometimes, always or never true? Or it is impossible to say?

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Explore the rates of growth of the sorts of simple polynomials often used in mathematical modelling.

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Can you fill in the mixed up numbers in this dilution calculation?

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Dip your toe into the world of quantum mechanics by looking at the Schrodinger equation for hydrogen atoms

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Which exact dilution ratios can you make using only 2 dilutions?

Challenge Level

Which dilutions can you make using only 10ml pipettes?

Challenge Level

Which dilutions can you make using 10ml pipettes and 100ml measuring cylinders?