Resources tagged with: Chemistry

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There are 71 results

Broad Topics > Applications > Chemistry

Constantly Changing

Age 14 to 16 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.

Big and Small Numbers in Chemistry

Age 14 to 16 Challenge Level:

Get some practice using big and small numbers in chemistry.

Core Scientific Mathematics

Age 14 to 18 Challenge Level:

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

The Power of Dimensional Analysis

Age 14 to 18

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

The Real Hydrogen Atom

Age 16 to 18 Challenge Level:

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

Reaction Rates

Age 16 to 18 Challenge Level:

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

Big and Small Numbers in Physics

Age 14 to 16 Challenge Level:

Work out the numerical values for these physical quantities.

Reaction Types

Age 16 to 18 Challenge Level:

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

Approximately Certain

Age 14 to 18 Challenge Level:

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

Cobalt Decay

Age 16 to 18 Challenge Level:

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

The Amazing Properties of Water

Age 14 to 18 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

Maths in the Undergraduate Physical Sciences

Age 16 to 18

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. . . .

Diamonds Aren't Forever

Age 16 to 18 Challenge Level:

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

Spectrometry Detective

Age 16 to 18 Challenge Level:

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

Catalyse That!

Age 16 to 18 Challenge Level:

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

Exact Dilutions

Age 14 to 16 Challenge Level:

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

Extreme Dissociation

Age 16 to 18 Challenge Level:

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

Real-life Equations

Age 16 to 18 Challenge Level:

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

Mixing Ph

Age 16 to 18 Challenge Level:

Use the logarithm to work out these pH values

Dilution Series Calculator

Age 14 to 16 Challenge Level:

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

Ph Temperature

Age 16 to 18 Challenge Level:

At what temperature is the pH of water exactly 7?

Blood Buffers

Age 16 to 18 Challenge Level:

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

Stemnrich - Applied Mathematics

Age 11 to 16 Challenge Level:

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

Chemnrich

Age 14 to 18 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. . . .

Mixed up Mixture

Age 14 to 16 Challenge Level:

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

Mathematical Issues for Chemists

Age 16 to 18

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

Striking Gold

Age 16 to 18 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.

What Salt?

Age 16 to 18 Challenge Level:

Can you deduce why common salt isn't NaCl_2?

Ideal Axes

Age 16 to 18 Challenge Level:

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

Reaction Rates!

Age 16 to 18

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

CSI: Chemical Scene Investigation

Age 16 to 18 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...

Gassy Information

Age 16 to 18 Challenge Level:

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

Eudiometry

Age 16 to 18 Challenge Level:

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

Smoke and Daggers

Age 16 to 18 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. . . .

A Question of Scale

Age 14 to 16 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?

Lennard Jones Potential

Age 16 to 18 Challenge Level:

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

Clear as Crystal

Age 16 to 18 Challenge Level:

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

Stats Statements

Age 16 to 18 Challenge Level:

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

Inspect Your Gadgets

Age 16 to 18

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

Investigating the Dilution Series

Age 14 to 16 Challenge Level:

Which dilutions can you make using only 10ml pipettes?

Bond Angles

Age 16 to 18 Challenge Level:

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

Bent Out of Shape

Age 14 to 18 Challenge Level:

An introduction to bond angle geometry.

Stereoisomers

Age 16 to 18 Challenge Level:

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

Heavy Hydrocarbons

Age 14 to 18 Challenge Level:

Explore the distribution of molecular masses for various hydrocarbons

Coordinated Crystals

Age 16 to 18 Challenge Level:

Explore the lattice and vector structure of this crystal.

Molecular Sequencer

Age 14 to 18 Challenge Level:

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

Reductant Ratios

Age 16 to 18 Challenge Level:

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