- Potassium chlorate
- 1 scale with 0.1 g accuracy
- 1 small container for the potassium chlorate
- 1 stand with a test tube clamp
- A 25 mm test tube (borosilicate)
- 1 gummy bear
- 1 pair of beaker tongs
- 1 kitchen torch
- Safety equipment: 1 fire extinguisher, 1 pair safety goggles, 1 pair of protective gloves, 1 protective apron.
- Something may catch fire.
- Someone may burn themselves.
- Injury due to a cracked test tube.
- Injury due to something flying out of the test tube.
- Inhalation, skin contact, eye contact or ingestion of potassium chlorate.
- Inhalation of chlorine gas.
- Do the demonstration in the company of an adult with experience of fire.
- Have a bucket of water ready.
- Have a fire extinguisher ready.
- Wear safety goggles, protective gloves and protective apron.
- Keep a distance from the test tube. Point it away from you.
- Make sure that no contaminants end up in the container with potassium chlorate, as it may then start to burn.
- Do the demonstration outdoors or in a fume hood.
- Make sure that all potassium chlorate melts (solid pieces can come flying otherwise).
- Do not touch the test tube until it has cooled down.
- Practice what to do if something catches fire or if someone burn themselves.
- Inhalation: Breathe a lot of fresh air.
- Skin contact: Take off contaminated clothes and shoes. Wash off skin with plenty of water and soap. Get medical attention if necessary.
- Eye contact: Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Get medical attention if necessary.
- Ingestion: Get medical attention.
Environment!
Explanation
- What happens if the amount of potassium chlorate and gummy bears doubles, i.e. 10 g of potassium chlorate and two gummy bears.
- How can you make a gummy bear burn without potassium chlorate?
- What happens if you add the gummy bear before melting the potassium chlorate?
Gummy bear osmosis
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