Lab: Physical and Chemical Changes

Question 1

Have you gathered all the materials needed?

Revolt · Accepted Answer

yes

Question 2

Which answer below correctly identifies the type of change and the explanation for the boiling of water?

Revolt · Accepted Answer

physical change because even though gas formation was observed, the water was undergoing a state change, which means that its original properties are preserved

Question 3

Which answer below correctly identifies the type of change and the explanation for the heating of copper(II) sulfate pentahydrate?

Revolt · Accepted Answer

chemical change because gas was released along with a color change, which indicated that the copper(II) sulfate pentahydrate was transformed into a different substance

Question 4

Which answer below correctly identifies the type of change and the explanation for the separation of the iron with sulfur?

Revolt · Accepted Answer

physical change because even though a color change occured, each solid maintained its original properties, which could be seen as soon as the magnet was applied

Question 5

Which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochloric acid?

Revolt · Accepted Answer

chemical change because a temperature change occurred, a solid disappeared, and a gas was produced

Lab: Physical and Chemical Changes Answers

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