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  2. Tooth whitening - Wikipedia

    en.wikipedia.org/wiki/Tooth_whitening

    Tooth whitening or tooth bleaching is the process of lightening the color of human teeth. [ 1] Whitening is often desirable when teeth become yellowed over time for a number of reasons, and can be achieved by changing the intrinsic or extrinsic color of the tooth enamel. [ 2] The chemical degradation of the chromogens within or on the tooth is ...

  3. Elephant's toothpaste - Wikipedia

    en.wikipedia.org/wiki/Elephant's_toothpaste

    Elephant's toothpaste. Elephant toothpaste reaction. Elephant's toothpaste is a foamy substance caused by the rapid decomposition of hydrogen peroxide ( H2O2) using potassium iodide (KI) or yeast and warm water as a catalyst. [ 1] How rapidly the reaction proceeds will depend on the concentration of hydrogen peroxide. [ 2][ 3][ 4]

  4. Streptocarpus sect. Saintpaulia - Wikipedia

    en.wikipedia.org/wiki/Streptocarpus_sect._Saint...

    Streptocarpus ionanthus flowers. Streptocarpus sect. Saintpaulia is a section within Streptocarpus subgenus Streptocarpella[ 1] consisting of about ten species of herbaceous perennial flowering plants in the family Gesneriaceae, native to Tanzania and adjacent southeastern Kenya in eastern tropical Africa.

  5. Hydrogen peroxide - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_peroxide

    Hydrogen peroxide is a chemical compound with the formula H 2 O 2.In its pure form, it is a very pale blue [5] liquid that is slightly more viscous than water.It is used as an oxidizer, bleaching agent, and antiseptic, usually as a dilute solution (3%–6% by weight) in water for consumer use and in higher concentrations for industrial use.

  6. Bombardier beetle - Wikipedia

    en.wikipedia.org/wiki/Bombardier_beetle

    The beetles' glands store enough hydroquinone and hydrogen peroxide to allow the beetle to release its chemical spray roughly 20 times. In some cases this is enough to kill a predator. [ 7 ] The main component of the beetle spray is 1,4-benzoquinone, an irritant to the eyes and the respiratory system of vertebrates.

  7. High-test peroxide - Wikipedia

    en.wikipedia.org/wiki/High-test_peroxide

    High-test peroxide ( HTP) is a highly concentrated (85 to 98%) solution of hydrogen peroxide, with the remainder consisting predominantly of water. In contact with a catalyst, it decomposes into a high-temperature mixture of steam and oxygen, with no remaining liquid water. It was used as a propellant of HTP rockets and torpedoes, and has been ...

  8. Hydrogen peroxide–urea - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_peroxide–urea

    Hydrogen peroxide–urea (also called Hyperol, artizone, urea hydrogen peroxide, and UHP) is a white crystalline solid chemical compound composed of equal amounts of hydrogen peroxide and urea. It contains solid and water -free hydrogen peroxide, which offers a higher stability and better controllability than liquid hydrogen peroxide when used ...

  9. Potassium permanganate - Wikipedia

    en.wikipedia.org/wiki/Potassium_permanganate

    It is a purplish-black crystalline salt, that dissolves in water as K + and MnO−. 4, an intensely pink to purple solution. Potassium permanganate is widely used in the chemical industry and laboratories as a strong oxidizing agent, and also as a medication for dermatitis, for cleaning wounds, and general disinfection.

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