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Zolol [24]
3 years ago
6

What happens when a solid compound dissolves in water?

Chemistry
2 answers:
IRINA_888 [86]3 years ago
6 0
It becomes a liquid with the water

zimovet [89]3 years ago
5 0
<span>When compounds like salt dissolve the atoms basically float around with the water. When they are a solid powder all the molecules sit closely packed together but when you dissolve it, they can all separate and float around with the water. </span>
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Which of the following reactions could be used to extract the lead from the lead nitrate?
alexgriva [62]

Answer:

Option b. Decomposition

Followed by a reduction process using charcoal

Explanation:

Lead can be obtained from lead nitrate by thermal decomposition of lead nitrate as shown below:

2Pb(NO3)2 —> 2PbO + 4NO2 + O2

The PbO obtained is reduced by charcoal(C) to obtain the metallic Pb as shown below:

2PbO + C —> Pb + CO2

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3 years ago
During an investigation, similar glow sticks were placed in two beakers containing water at different temperatures. A record of
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6 0
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frutty [35]

Answer: Compound

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper Cu

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2H_2O\rightarrow 2H_2+O_2

Thus as it give that  the red sample on being heated, a gas is released and a blue powder is left after the heating. Thus the given sample is a compound.

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The correct answer is decomposers.
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3 years ago
Could you separate the sodium from the chlorine by crushing the salt crystals
Zigmanuir [339]
No, you cannot.

The distinction is made in the fact that the sodium and chlorine atoms are bonded chemically, while the crushing of the salt is a physical change. A physical change is one that does not have the ability to change the identity of the substance. Such changes include crushing, boiling, melting. In order to separate the chlorine and sodium atoms, you must make them undergo a chemical change, for example add the salt to sulfuric acid and make it react.
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