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Making a rubber band.

Making a rubber band. Measuring extension of rubber band against force. A stretched rubber band contracts when heated. Foam rubber can be made from rubber latex, citric acid and sodium bicarbonate. Making foam rubber. A balloon can be electrically charged by friction

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Making a rubber band.

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  1. Making a rubber band.

  2. Measuring extension of rubber band against force.

  3. A stretched rubber band contracts when heated.

  4. Foam rubber can be made from rubber latex, citric acid and sodium bicarbonate.

  5. Making foam rubber.

  6. A balloon can be electrically charged by friction because it is a good electrical insulator.

  7. A strip of shape memory polymer composite reverts to its original shape when warmed.

  8. Hydrogels are used in disposable nappies.

  9. Hydrogel can absorb several time its own mass.

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