Chemistry
Equilibria...
The Haber Process
Weak Acid - Strong Base Titrations
Carbonate Titrations
A simulation of the Haber Process. The temperature and pressure can be varied and the effect on yield of ammonia can be recorded. The simulation generates numbers that can be used to plot yield versus pressure or temperature graphs. A simulated pH titration of three weak acids with sodium hydroxide solution. The program allows data to be plotted and Ka values of the acids to be determined. The pH titration of sodium carbonate solution with hydrochloric acid. The simulation shows the pH changes (with two equivalence points) as well as the point when carbon dioxide is released.
KS4, KS5 KS5 KS5
Equilibrium 1
Equilibrium 2
Equilibrium 3
The initial molar amounts of hydrogen, iodine and hydrogen iodide can be set and then equilibrium can be reached. There is a facility which can hide the equibrium amounts allowing students to work them out themselves. This shows that equilibrium can be reached from either the starting materials or the products. The value of Kc can be calculated.
The initial molar amounts of nitrogen, hydrogen and ammonia can be set and then equilibrium can be reached. There is a facility which can hide the equibrium amounts allowing students to work them out themselves. This shows that equilibrium can be reached from either the starting materials or the products. The value of Kc can be calculated.
The equilibrium molar composition of nitrogen, hydrogen and ammonia will vary at different pressures and temperatures. This shows that although the pressure alters the equilibrium composition the equilibrium constant Kc (or Kp) remains unchanged. Variations in temperature changes both the composition and the value of the equilibrium constant.
KS5 KS5 KS5
Rates of Reaction...
Surface Area
Concentration
Temperature

Gives a qualitative demonstration of how surface area effects the rate of reaction between a solid and a solution. Click on any of the solids (large lumps, medium lumps or powder) to view the reaction in terms of particle collisions. The program can be reset by clicking on the stopper. Gives a qualitative demonstration of how the concentration of reactants effects the rate of reaction. Click on any of the bottles to view the reaction in terms of particle collisions. The program can be reset by clicking on the stopper. Gives a qualitative demonstration of how temperature effects the rate of reaction. Adjust the temperature of the water bath by rotating the dial. Clicking on the measuring cylinders starts the reaction. Reset by clicking the reset button on the water bath.

KS4

KS4 KS4
Atoms and Elements
Particles... Reactions...
An Ideal Gas
Reactivity Series Sumo Wrestlers
Identifying Salts

Shows the movement of particles of an ideal gas in an enclosed space. Both temperature and volume can be changed and the effect on pressure investigated.

A simple teaching aid to help pupils understand displacement reactions. Four metals are represented as Sumo wrestlers. They can be dragged on to the 'sulphate' ring to compete. The least reactive metal can be removed to demonstrate the displacement rule. Combines flame testing for alkali metals and the precipitation of silver halides in order to identify alkali metal halide salts.
KS5 KS3 KS4
Atomic Structure
Atoms Builder
Discovery Dates
Shows the atomic structure of the elements from Hydrogen to Argon. Builds atoms, isotopes and ions by adding (or subtracting) protons, neutrons and electrons. The program shows the atomic number, atomic mass and overall charge. An interactive periodic table showing the dates of discovery of the elements. Time can advanced or reversed to see the order of discovery from ancient times to the present day. The periodic table can also be selected to show reactivity, the main groups and natural abundance.
KS4 KS4 KS4
History of the Periodic Table

Allows the Periodic Tables of Newlands and Mandeleev to be compared to the modern periodic table.

 

 

   
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