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amid [387]
3 years ago
11

Solid liquid and gas is physical or chemical explain

Chemistry
1 answer:
Aleksandr [31]3 years ago
5 0

Answer: Physical change

Explanation:  I said physical change because its changing the form of the substance and also solid to gas are sublimating

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A brief explanation to this question: "Why are neon signs/fireworks different colors? Please help me. Do not look up internet
fiasKO [112]

Answer:

when lit, the atoms of different chemical compounds inside the firework absorb energy, when the electrons fall back to lower energy levels, they give off colored light. Depending upon the chemical used, different colors are produced. neon lights or signs are glass tubes filled with neon gas. When the light is plugged in, the electrical energy causes the electrons of neon to jump to higher energy levels, when they go to lower levels, colored light is given off. The neat thing is that the neon never gets used up. The only thing that gets used up is the electricity. The electrons don't get destroyed and can be used over and over again jumping levels. Neon glows with an orange light, but you know that neon signs can be lots of different colors. The variations come when different gases other than neon are used such as argon, or krypton or when the tube is painted so that with the light produced it produces a certain color.

Explanation:

4 0
3 years ago
1.<br> How<br> many atoms of Li are there in 7.5 moles of Li?
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Answer: 4.52x10²⁴ atoms Li

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Choose the word that best completes this sentence. Welding in confined spaces or on stainless steel generates _____________ a ve
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Elenna [48]
I’m not sure what this says could you translate it to English please?
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Match the bond to its formula
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