The Structure of the Atom

Question 1

A number of substances and their chemical formulas are listed below. Check the ones that are compounds.

Revolt · Accepted Answer

carbon monoxide (CO); glucose (C6H12O6)

Question 2

Brass is a combination of a number of elements. Its exact composition can vary.

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mixture

Question 3

Pass a magnet over the mixture to remove the steel.

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1 Pass a magnet over the mixture to remove the steel.

Question 4

Add water to the sand/salt mixture and stir to dissolve the salt.

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2 Add water to the sand/salt mixture and stir to dissolve the salt.

Question 5

Coffee is a solution of organic substances in water.

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mixture

Question 6

Caffeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed ratio.

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compound

Question 7

Soda is a mixture. The ingredients list for a can of soda is given below.The ingredients of the soda are best described as .

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compounds

Question 8

Which statement best describes the relationship between the ingredients?

Revolt · Accepted Answer

They are not chemically bonded to each other.

Question 9

To separate a mixture of hard candies and marbles, the most efficient method would be .

Revolt · Accepted Answer

sorting the mixture by hand

Question 10

To separate a mixture of large gravel and sand, the most efficient method would be .

Revolt · Accepted Answer

passing the mixture through a sieve

The Structure of the Atom Answers