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2 years ago

Compare physical changes and chemical changes

Physics

1 answer:

JulijaS [17]2 years ago

4 0

Answer:

The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition. Although we call them physical "reactions," no reaction is actually occurring. In order for a reaction to take place, there must be a change in the elemental composition of the substance in question. Thus, we shall simply refer to physical "reactions" as physical changes from now on.

Explanation:

Physical changes are limited to changes that result in a difference in display without changing the composition. Some common changes (but not limited to) are:

Texture

Color

Temperature

Shape

Change of State (Boiling Point and Melting Point are significant factors in determining this change.)

Physical properties include many other aspects of a substance. The following are (but not limited to) physical properties.

Luster

Malleability

Ability to be drawn into a thin wire

Density

Viscosity

Solubility

Mass

Volume

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Answer:

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Explanation:

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The length of the leg is approximately the height of the person:

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3 years ago

A 1-mCi source of^60 Co is placed in the center of a cylindrical water-filled tank with an inside diameter of 20 cm and depth of

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To solve this problem we need the concepts of Energy fluency and Intensity from chemical elements.

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r = distance

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In the other hand we have the equation for current in materials, which is given by

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Then replacing our values we have that

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2 years ago

1. If the strength of the magnetic field at B is 3 units, the strength of the magnetic field at A is _____.

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<h3><u>Answer;</u></h3>

C. 12 units

<h3><u>Explanation;</u></h3>

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3 years ago

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Answer:

Explanation:

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3 years ago

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