Ammonia production by the Haber process
How can nitrogen from the air be converted into ammonia quickly, efficiently and economically?
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CHEMISTRY · 9 EXPLORATION STEPS
Metal corrosion and self-heating hand warmers
Iron rusts slowly, so how can it make a hand warmer hotter than 45 ℃? How can the same principles protect iron from rusting?
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▶ Open 3D simulationYOUR EXPLORATION
One step, one new insight.
- 01
Four stations on the bench
- 02
Why does the liquid column rise?
- 03
Role of carbon powder
- 04
Switch to acidic conditions
- 05
Look inside
- 06
Heat from a hand warmer
- 07
Consequences of sealing
- 08
Let zinc corrode instead
- 09
Assessment · Design a hand warmer
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Factors affecting reaction rate
Why do some reactions finish in seconds while others take a long time? What determines how fast a reaction proceeds?
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Molecular models of organic compounds
Molecular formulae are drawn on flat paper, but what are the actual three-dimensional shapes? What can a ball-and-stick model reveal?
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