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Broad Topics > Applications > chemistry

CSI: Chemical Scene Investigation

Stage: 5 Challenge Level:

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...

Reaction Rates!

Stage: 5

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

The Power of Dimensional Analysis

Stage: 4 and 5

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

Stage: 5

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

Concentrations

Stage: 5 Challenge Level:

Use the interactivity to practise your skills with concentrations and molarity.

Diamonds Aren't Forever

Stage: 5 Challenge Level:

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

What Salt?

Stage: 5 Challenge Level:

Can you deduce why common salt isn't NaCl_2?

Reaction Rates

Stage: 5 Challenge Level:

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

Constantly Changing

Stage: 4 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.

Clear as Crystal

Stage: 5 Challenge Level:

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

Smoke and Daggers

Stage: 5 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. . . .

Big and Small Numbers in Chemistry

Stage: 4 Challenge Level:

Get some practice using big and small numbers in chemistry.

Stats Statements

Stage: 5 Challenge Level:

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

Big and Small Numbers in Physics

Stage: 4 Challenge Level:

Work out the numerical values for these physical quantities.

Real-life Equations

Stage: 5 Challenge Level:

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

Ph Temperature

Stage: 5 Challenge Level:

At what temperature is the pH of water exactly 7?

Mixing Ph

Stage: 5 Challenge Level:

Use the logarithm to work out these pH values

Blood Buffers

Stage: 5 Challenge Level:

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

Extreme Dissociation

Stage: 5 Challenge Level:

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

Maths in the Undergraduate Physical Sciences

Stage: 5

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. . . .

Stemnrich - Applied Mathematics

Stage: 3 and 4 Challenge Level:

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

Mathematical Issues for Chemists

Stage: 5

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

Core Scientific Mathematics

Stage: 4 and 5 Challenge Level:

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

Stereoisomers

Stage: 5 Challenge Level:

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

Mixed up Mixture

Stage: 4 Challenge Level:

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

The Amazing Properties of Water

Stage: 4 and 5 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

Bent Out of Shape

Stage: 4 and 5 Challenge Level:

An introduction to bond angle geometry.

Dilution Series Calculator

Stage: 4 Challenge Level:

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

Heavy Hydrocarbons

Stage: 4 and 5 Challenge Level:

Explore the distribution of molecular masses for various hydrocarbons

Investigating the Dilution Series

Stage: 4 Challenge Level:

Which dilutions can you make using only 10ml pipettes?

The Real Hydrogen Atom

Stage: 5 Challenge Level:

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

Conversion Sorter

Stage: 4 Challenge Level:

Can you break down this conversion process into logical steps?

Exact Dilutions

Stage: 4 Challenge Level:

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

Striking Gold

Stage: 5 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.

Bond Angles

Stage: 5 Challenge Level:

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

Catalyse That!

Stage: 5 Challenge Level:

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

Coordinated Crystals

Stage: 5 Challenge Level:

Explore the lattice and vector structure of this crystal.

Lennard Jones Potential

Stage: 5 Challenge Level:

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

Reaction Types

Stage: 5 Challenge Level:

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

Spectrometry Detective

Stage: 5 Challenge Level:

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

Molecular Sequencer

Stage: 4 and 5 Challenge Level:

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

Ideal Axes

Stage: 5 Challenge Level:

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

Eudiometry

Stage: 5 Challenge Level:

When a mixture of gases burn, will the volume change?

Cobalt Decay

Stage: 5 Challenge Level:

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

Reductant Ratios

Stage: 5 Challenge Level:

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

Stage: 4 and 5 Challenge Level:

Advanced problems in the mathematical sciences.

A Question of Scale

Stage: 4 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?

Approximately Certain

Stage: 4 and 5 Challenge Level:

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

Gassy Information

Stage: 5 Challenge Level:

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

Chemnrich

Stage: 4 and 5 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. . . .