Chemistry College


7. Which of the following is a proof that light travels in a straight line?
A. Formation of clouds
C. Formation of rainbows
B. Formation of colors
D. Formation of shadow
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Answers

Answer 1

Answer:

formation of shadow is right

Answer 2

Answer:

correct answer is D

Explanation:

When you see a shadow, it is directly behind the object.

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What physical property of matter determines the earth ?

Answers

Answer:

Density is a physical property that is determined by dividing the mass of a given amount of a substance by its volume.

Explanation:

how is the periodic table important for all of science and not just chemistry? pleas answer me​

Answers

Answer:

The periodic table has been there for such a long time and how it is helpful in all science it is the element itself. How the element is used in real life. For example, oxygen is used in the atmosphere. Plants use carbon in order to covert it into oxygen more like that

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