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Memory Activity: Recall and Understanding
Read the passage below and complete the quiz that follows. Click the button next to your answer.


Question 1:
According to the Oxygen Theory, the gases produced from the complete combustion of a candle
A. can support the breathing of a mouse.
B. are nonflammable.
C. are toxic to growing plants.
D. are rich in hydrogen gas.

Question 2:
According to the Oxygen Theory, both the burning of a material and the rusting of a metal involve
A. converting the elements of the material into gaseous compounds.
B. removing oxygen from the material and releasing it into the air.
C. producing high temperatures as a result of the chemical reactions.
D. forming oxygen-containing compounds from the elements in the material.

Question 3:
Which of the following best states the intent of the Oxygen Theory passage?
A. to prove that all substances that burn contain oxygen
B. to show that during a chemical reaction, matter is neither created nor destroyed
C. to show that if air in a closed container did not support combustion, it could still contain oxygen
D. to explain the process of converting wood ash into rust

Click finished when you're ready to see how you did.


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