Observing a Chemical Reaction (Tutorial 1.1)

What is the chemical equation for Cavendish’s experiment with zinc?

• Zinc + Sulfuric acid → Zinc sulfate + Hydrogen

• Zinc + Acetic acid → Zinc acetate + Hydrogen

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Did Cavendish's second experiment with hydrogen gas involve a chemical reaction?

• Yes, it was a chemical reaction.

• No, it was not a chemical reaction.

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What is the word equation for the second reaction?

• Carbon + Oxygen → Carbon Dioxide

• Hydrogen + Oxygen → Water

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What was the main purpose of Cavendish's experiment with hydrogen gas?

• To create a new type of gas.

• To determine the density of hydrogen gas.

Which gas did Cavendish identify as 'inflammable air'?

• Oxygen

• Hydrogen

What was a significant outcome of Cavendish's experiments with hydrogen?

• Invention of the steam engine.

• Discovery of the composition of water.

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What was Cavendish's method for collecting hydrogen gas during his experiments?

• Using a pneumatic trough.

• Using a vacuum pump.

Which property of hydrogen did Cavendish measure to determine its density?

• Its weight compared to air.

• Its volume at standard temperature and pressure.

What was a key observation Cavendish made when hydrogen reacted with oxygen?

• The formation of a solid residue.

• The production of a bright flame.

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NGSS.MS-PS1-2

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