Question

The picture below shows a chemistry experiment. Which statement best describes steps of this experiment?

* 1 point

Iron

Sulfur

filings

Heat

Step 1: Iron and sulfur are mixed together in a test tube.

Step 2: The test tube is heated.

Iron sulfide

Step 3: The test tube is allowed to cool.

Step one contains a compound, which is chemically combined in step two, forming a mixture in step three.

Step one contains a compound, which is physically combined in step two, forming a mixture in step three.

Step one contains one element, which is physically changed in step two, forming a new compound in step three.

Step one contains a mixture of elements, which are chemically combined in step two, forming a new compound in step three.

Answer 1

Step one contains a compound, which is physically combined in step two, forming a mixture in step three.