Elements, Compounds, and Mixtures

Question 1

Coffee is a solution of organic substances in water.

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mixture

Question 2

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

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mixture

Question 3

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

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carbon monoxide (CO); glucose (C6H12O6)

Question 4

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

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compound

Question 5

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

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sorting the mixture by hand

Question 6

To separate a mixture of iron filings and salt, the most efficient method would be .

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passing a magnet through the mixture

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

Sports drinks contain sugar, salt, and flavorings dissolved in water. They can be made more or less sweet by adding different amounts of sugar.

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mixture

Question 9

Which statement best describes the relationship between the ingredients?

Revolt · Accepted Answer

They are not chemically bonded to each other.

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

Elements, Compounds, and Mixtures Answers