Changes of State

Question 1

Which statements describe chemical changes? Check all that apply.The after-rain smell is produced by an interaction between rain and the oils released by plants.A homemade volcano can be created by combining baking soda and vinegar. When it erupts, carbon dioxide gas is released.Sheep are sheared for their wool. The wool is cleaned and twisted into yarn. The yarn is dyed and used to knit clothing.The Statue of Liberty has turned green over time due to the reaction of copper with carbon dioxide and water.Mosaic art is created by smashing colored glass tiles and rearranging them to form a picture or design.

Revolt · Accepted Answer

A: The after-rain smell is produced by an interaction between rain and the oils released by plants.; B: A homemade volcano can be created by combining baking soda and vinegar. When it erupts, carbon dioxide gas is released.; D: The Statue of Liberty has turned green over time due to the reaction of copper with carbon dioxide and water.

Question 2

Kerosene was commonly used in lamps because it burns easily.

Revolt · Accepted Answer

B: chemical property

Question 3

Baking a cake:

Revolt · Accepted Answer

B: chemical change

Question 4

The element nickel has a boiling point of 2,913°C.

Revolt · Accepted Answer

A: physical property

Question 5

Smashing a soda can:

Revolt · Accepted Answer

A: physical change

Question 6

Copper is used to make electrical wire because it is a good conductor.

Revolt · Accepted Answer

A: physical property

Question 7

Shredding paper:

Revolt · Accepted Answer

A: physical change

Question 8

Cesium produces an explosion when it is added to water.

Revolt · Accepted Answer

B: chemical property

Question 9

Chopping wood:

Revolt · Accepted Answer

A: physical change

Question 10

Hydrogen is the least dense of all elements.

Revolt · Accepted Answer

A: physical property

Changes of State Answers

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