1. Acids and alkalis

    Duration: 03.02

    Watch Clip duration: 03.02

    How carbon dioxide levels in the atmosphere are causing the pH of the oceans to change.

  2. Alkali metals and their reactions to air and water

    Duration: 02.15

    Watch Clip duration: 02.15

    The relative speeds of surface corrosion of alkali metals and their reaction with water.

  3. An interview with a mechanical engineer

    Duration: 00.31

    Watch Clip duration: 00.31

    Interview with a mechanical engineer who explains links between engineering and medicine.

  4. Atomic mass

    Duration: 01.48

    Watch Clip duration: 01.48

    A brief introduction to the mass of atoms and how they vary in different elements.

  5. Can you make a star on Earth?

    Duration: 04.26

    Watch Clip duration: 04.26

    Presenter Greg Foot demonstrates that a star is just like a continuous chemical reaction.

  6. Combustion of natural gas

    Duration: 02.16

    Watch Clip duration: 02.16

    The burning of methane as a chemical reaction.

  7. Conservation of mass in chemical reactions

    Duration: 02.48

    Watch Clip duration: 02.48

    The concept of conservation of mass in chemical reaction using two examples.

  8. Development of photography by Daguerre and Fox Talbot

    Duration: 06.12

    Watch Clip duration: 06.12

    The scientific invention of photography by Louis Deguerre and William Henry Fox Talbot.

  9. Electrolysis and electroplating

    Duration: 02.08

    Watch Clip duration: 02.08

    A demonstration of electroplating a copper coin with zinc.

  10. Endothermic and exothermic reactions

    Duration: 03.38

    Watch Clip duration: 03.38

    An endothermic reaction and an exothermic reaction are shown and explained.

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