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Chemistry videos - chemicum.com

In order to make chemistry lessons more interesting, 111 chemistry videos are being developed by scientists and lecturers from Chemicum of University of Tartu, Estonia. "100+ Experiments in Chemistry" is designed for chemistry teachers for showing commented experiment videos in front of classroom. In addition to a school programme, some interesting chemistry phenomena is explained: Caesium reaction with water was filmed with the help of a bomb group. What is cold light or chemiluminescence. Thermoreactive compounds change color upon heating. Very odd reaction - "The Pharaoh's Serpent". Nitrocellulose explodes and puts formula model car on the move. Why pyrophoric iron, silane and white phosphorus ignite spontaneously. Some magic - clock reaction and magical color changes. What is the working principle of batteries, fuel cells and supercapacitors and how to prepare these yourself? What makes fireworks colorful (green, red, yellow)? Time fuse can be used for igniting safely some pyrotechnic mixtures, for example aluminothermic mixture or "Vulcano". Let's prepare a color changing flower and some chemical seaweed.

DIY electrochemistry experiments. New! Kemizoo free molecule viewer is online (introduction).

NON-METALS: ->Reactions with oxygen: 1. Preparation and verification of oxygen 2. Combustion of coal in melted potassium nitrate 3. Combustion of sulphur in melted potassium nitrate 4. Combustion of coal in air and oxygen 5. Combustion of sulphur in air and oxygen 6. Combustion of red phosphorus in air and oxygen 7. Self-ignition of white phosphorus in air 8. Electrolysis of water 9. Changes in pH during water electrolysis
->Reactions with hydrogen: 10. Preparation and combustion of hydrogen 11. Lightness of hydrogen 12. Reduction of copper(II)oxide with hydrogen
->Reactions with carbon dioxide: 13. Carbon dioxide as heavier gas than air 14. Preparation of CO2 from copper- hydroxidecarbonate 15. Carbon dioxide as a fire-extinguisher 16. Carbon dioxide in exhaled air 17. Preparation of carbon dioxide from a vitamine pill 18. Preparation of CO2 from lime scale and acetic acid 19. Preparation of carbon dioxide from carbonated water 20. Carbon dioxide reaction with alkali 21. pH change in the dissolution of carbon dioxide 22. Experiments with solid carbon dioxide 23. Combustion of magnesium in carbon dioxide
->Reactions with nitrogen and ammonia: 24. Nitrogen as a fire-extinguisher 25. Preparation of ammonia and dissolution in water 26. pH change in the dissolution of ammonia
->Reactions with chlorine: 27. Reaction between ammonia and hydrogen chloride 28. Preparation and verification of chlorine 29. Reaction of chlorine and iodide 30. Photochemical reaction: chlorine and hydrogen 31. Combustion of sodium in chlorine 32. Reaction of chlorine and copper 33. Combustion of antimony in chlorine 34. Reaction of chlorine and iron
METALS: ->s_metals: 35. Reaction of sodium and water 36. Reaction of lithium and water 37. Reaction of potassium and water 38. Reaction of calcium and water 39. Reaction of sodium and sulphur 40. Burning of magnesium
->p,d_metals: 41. Burning of iron powder 42. Burning of zinc powder 43. Aluminothermy 44. Reaction of aluminium and alkali 45. Reaction of iron and sulphur 46. Reaction of zinc and iodine 47. Reaction of zinc and acids 48. Reaction of copper and nitric acid 49. Deposition of copper on iron 50. Deposition of mercury on copper
->Flame tests: 51. Flame-test of a sodium salt 52. Flame-test of a potassium salt 53. Flame-test of a lithium salt 54. Flame-test of a barium salt 55. Flame-test of a strontium salt 56. Flame-test of copper
Characteristics of reactions: 57. Charateristics of a chemical reaction 58. Color changes 59. Evolution of gas 60. Formation of insoluble compound 61. Generation of light 62. Sound effect 63. Release of heat 64. Absorption of heat 65. The Pharaoh's Serpent
Separation of mixtures: 66. Filtration 67. Vacuum filtration 68. Separation of immiscible liquids 69. Sublimation 70. Distillation 71. Centrifugation 72. Chemical purification of gasses
Reaction rate, equilibrium: 73. The effect of concentration on rate of reaction 74. Dependence of reaction rate on primary substance 75. Temperature influence on chemical equilibrium 76. Chromium(III)oxide as a catalyst 77. Water ignites fire
Solutions, pH: 78. Influence of mixing on the speed of dissolution 79. Temperature dependence of salt solubility 80. Solubility of a gas 81. The color scale of universal indicator 82. Strong and weak acids and bases 83. Determination of pH for consumer goods 84. pH of salt solutions, hydrolysis 85. Basic oxide reaction with water 86. Magical color changes
Experiments with organic compounds: 87. Burning of carbohydrates 88. Burning of alcohols 89. Reaction of sodium and ethanol 90. Reaction of sulphuric acid and carbohydrates 91. Combustion of nitrocellulose 92. Combustion of boric acid ethyl ester 93. Chemiluminescence 94. Time fuse
Electrochemistry: 95. Chemical current source 96. Hydrogen-oxygen fuel cell 97. Storing wind energy in hydrogen 98. Storing solar energy in hydrogen 99. Tic-Tac supercapacitor 100. Electrochemical deposition of copper
Demonstration videos: 101. Reaction of rubidium and water 102. Reaction of caesium and water 103. Thermoreactive compounds 104. Volcano 105. Oxidizing properties of manganese(VII) oxide 106. Preparation and combustion of silane 107. Chemical clock 108. Fire as an artist 109. Silicate garden 110. Pyrophoric iron 111. Combustion in potassium chlorate

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The licence for pictures is CC BY-SA 3.0 - anyone can copy and use images and screenshots. The licence for the videos is CC BY-NC-ND 3.0 - you can embed or link the videos at your website (the code is available by pressing ? button in the right-top of the videoplayer during video play).