Copper Cycle Lab Quiz

What color changes did you observe during the Copper Cycle lab?

• Green/brown to yellow, yellow to blue, and blue to green/brown

• Blue to black, black to red/brown, and red/brown to blue

• Black to white, white to gray, and gray to silver

• Red to purple, purple to orange, and orange to yellow

Describe any gas evolution observed during the lab.

• Nitrogen Dioxide (NO2) gas was released

• No, only solid evolution was observed during the lab.

• Carbon Dioxide (CO2) gas was released

• Methane gas (CH4) was released

Tags

NGSS.MS-PS1-2

Did you notice any changes in temperature during the lab? If yes, describe.

• Yes, the temperature increased when the copper was cooled and decreased when it was heated.

• Yes, the temperature increased when the copper was heated and decreased when it was cooled.

• No, the temperature remained constant throughout the lab.

• Yes, the temperature had no effect on the lab results.

Tags

NGSS.HS-PS1-5

What is the chemical name of the compound formed when copper reacts with nitric acid?

• Copper oxide

• Nitric copper

• Nitrate copper

• Copper nitrate

What is the chemical name of the compound formed when copper reacts with sodium hydroxide?

• Copper hydroxide

• Sodium copper oxide

• Sodium hydroxide copper

• Copper(II) hydroxide

What is the chemical name of the compound formed when copper reacts with sulfuric acid?

• Copper sulfide

• Sulfuric copper

• Copper oxide

• Copper(II) sulfate

What is the chemical formula of copper nitrate?

• Cu(NO3)2

• Cu2(NO3)3

• Cu(NO2)3

• Cu3(NO3)2

What is the chemical formula of copper hydroxide?

• Cu2(OH)3

• Co(OH)2

• Cu(OH)2

• CuOH

Explain how the concept of conservation of mass is demonstrated in the Copper Cycle lab.

• The concept of conservation of mass is not demonstrated in the lab

• Copper atoms don't disappear, but they do multiply, and that's why we see the results we did

• Copper atoms never disappear, generally - instead, they get moved around

• Conservation of mass is where copper amounts are different at the start and the finish of the reaction

Tags

NGSS.MS-PS1-5

How does the law of conservation of mass apply to the reactions in the Copper Cycle lab?

• The law of conservation of mass applies to the reactions in the Copper Cycle lab by ensuring that the total mass of the products formed is equal to the total mass of the reactants used.

• The law of conservation of mass applies to the reactions in the Copper Cycle lab by ensuring that the total mass of the products formed is less than the total mass of the reactants used

• The law of conservation of mass only applies to reactions involving copper

• The law of conservation of mass does not apply to the reactions in the Copper Cycle lab

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5