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  2. Colored fire - Wikipedia

    en.wikipedia.org/wiki/Colored_fire

    Colored fire is a common pyrotechnic effect used in stage productions, fireworks and by fire performers the world over. Generally, the color of a flame may be red, orange, blue, yellow, or white, and is dominated by blackbody radiation from soot and steam.

  3. Pyrotechnic colorant - Wikipedia

    en.wikipedia.org/wiki/Pyrotechnic_colorant

    The red lithium flame leads to lithium's use in flares and pyrotechnics Copper compounds glow green or blue-green in a flame. Calcium compounds glow orange in a flame. Sodium compounds glow yellow in a flame.

  4. Nickel - Wikipedia

    en.wikipedia.org/wiki/Nickel

    Nickel is the top confirmed contact allergen worldwide, partly due to its use in jewelry for pierced ears. [147] Nickel allergies affecting pierced ears are often marked by itchy, red skin. Many earrings are now made without nickel or with low-release nickel [148] to address this problem.

  5. Nickel compounds - Wikipedia

    en.wikipedia.org/wiki/Nickel_compounds

    Nickel tetracarbonyl was the first discovered organonickel compound. It was discovered that carbon monoxide corroded a nickel reaction chamber valve. And then that the gas coloured a bunsen burner flame green, and then that a nickel mirror condensed from heating the gas. The Mond process was thus inspired to purify nickel. [60]

  6. Raney nickel - Wikipedia

    en.wikipedia.org/wiki/Raney_nickel

    Raney nickel is flammable. Nickel metal is classified as "Harmful". Due to its large surface area and high volume of contained hydrogen gas, dry, activated Raney nickel is a pyrophoric material that requires handling under an inert atmosphere. Raney nickel is typically supplied as a 50% slurry in water. Even after reaction, residual Raney ...

  7. Milwaukee’s impressive 12-5 record mutes, for now, a lot of warning signals. But the Bucks are not hiding from what they need to work on.

  8. Flame test - Wikipedia

    en.wikipedia.org/wiki/Flame_test

    The characteristic bluish-green color of the flame is due to the copper. A flame test is relatively quick test for the presence of some elements in a sample. The technique is archaic and of questionable reliability, but once was a component of qualitative inorganic analysis .

  9. Combustibility and flammability - Wikipedia

    en.wikipedia.org/wiki/Combustibility_and...

    In other words, a combustible material ignites with some effort and a flammable material catches fire immediately on exposure to flame. The degree of flammability in air depends largely upon the volatility of the material – this is related to its composition-specific vapour pressure , which is temperature dependent.