The Historical Development of Atomic Theory

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.

Revolt · Accepted Answer

mixture

Question 3

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

Revolt · Accepted Answer

passing the mixture through a sieve

Question 4

Describe the best method for separating a mixture of sand, salt, and steel shavings by placing the steps below in the correct order. Heat the mixture to evaporate the water.

Revolt · Accepted Answer

4

Question 5

Pour the mixture through a filter to separate the sand.

Revolt · Accepted Answer

3 Pour the mixture through a filter to separate the sand.

Question 6

Pass a magnet over the mixture to remove the steel.

Revolt · Accepted Answer

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

Question 7

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

Revolt · Accepted Answer

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

The Historical Development of Atomic Theory Answers

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