Chemistry Quiz

What did Henry Cavendish call the gas that burned readily and was produced by the reaction of zinc, iron, and tin with acids?

• Fixed air

• Nitrous oxide

• Inflammable air

• Oxygen

Who first used nitrous oxide as an anaesthetic in surgery?

• Joseph Priestley

• Humphry Davy

• Horace Wells

• Henry Cavendish

What discovery by Henry Cavendish led to the development of the first hydrogen balloon?

• The identification of oxygen

• The calculation of the density of inflammable air

• The use of nitrous oxide in surgery

• The production of fixed air

Which gas did Joseph Priestley and Carl Scheele isolate that was later named by Priestley?

• Hydrogen

• Oxygen

• Nitrous oxide

• Carbon dioxide

What did Henry Cavendish demonstrate with his experiments on water?

• That water is a basic element

• That water is a compound of hydrogen and dephlogisticated air (oxygen)

• That water can exist in three states

• That water is inflammable

According to the text, what was the composition of Earth's atmosphere as discovered by Cavendish?

• 50% oxygen, 50% nitrogen

• 99% hydrogen, 1% other gases

• 99% dephlogisticated air (oxygen), 1% other gases

• 99% nitrogen and other gases, 1% oxygen

What incorrect notion did Cavendish challenge through his experiments?

• The existence of atoms

• The phlogiston theory

• The conservation of mass

• The theory of relativity

What was unique about the way Henry Cavendish conducted his life and work?

• He worked in large teams

• He was very sociable and outgoing

• He worked alone and was reclusive

• He frequently traveled for research