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Feliz [49]
3 years ago
13

How are physical and chemical changes similar?

Chemistry
2 answers:
wariber [46]3 years ago
8 0
<span>Physical changes occur when substances undergo a change that does not change their chemical composition. It doesnot includes change in chemical composition.
Chemical change is the change that causes the formation of new chemical substance.
A.</span><span>Neither can change the number of atoms of each element that are present, is the correct answer.</span>
mr Goodwill [35]3 years ago
7 0
I believe the correct response is the first option.
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Answer ; The question is missing in some details, but here are he details ;

The two naturally occurring isotopes of bromine are

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Bromine and chlorine combine to form bromine monochloride, BrCl.

Explanation:

The detaile calculation is as shown in the attachment.

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What is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? As air
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We need to know the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure.

The relationship is: As air pressure in an area increases, the density of the gas particles in that area increases.

For any gaseous substance, density of gas is directly proportional to pressure of gas.

This can be explained from idial gas edquation:

PV=nRT

PV=\frac{w}{M}RT [where, w= mass of substance, M=molar mass of substance]

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So, for a particular gaseous substance (whose molar mass is known), at particular temperature, pressure is directly related to density of gaseous substance.

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