Start learning →

PE Chemical Chemistry — practice questions

Explore 30 free Chemistry questions in PE Chemical Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Chemistry with Quill →

Chemistry questions and exercises with answers

Showing questions 1–30 of 30.

An engineer reports a pressure in SI units. The SI unit of pressure is the:Read the answer and worked solution →The pressure unit torr is named after the inventor of the barometer:Read the answer and worked solution →A water barometer is impractical because normal air pressure supports a water column over:Read the answer and worked solution →Mercury is used in barometers instead of water because mercury is denser by a factor of about:Read the answer and worked solution →A device like a barometer used to measure the pressure of gas trapped in a container is a:Read the answer and worked solution →A balloon warms from 283 K to 303 K at constant pressure, so its volume will:Read the answer and worked solution →That relationship between volume and temperature at constant pressure is named after:Read the answer and worked solution →For a fixed sample at constant temperature, the product of pressure and volume stays:Read the answer and worked solution →That pressure and volume relationship at constant temperature is named after:Read the answer and worked solution →Equal volumes of all gases at the same temperature and pressure hold the same number of molecules. That is the law of:Read the answer and worked solution →Standard temperature and pressure are defined here as 1 atm and a temperature of:Read the answer and worked solution →At standard temperature and pressure, one mole of an ideal gas occupies about:Read the answer and worked solution →The total pressure of a gas mixture equals the sum of each gas's:Read the answer and worked solution →Moles of one component divided by total moles in the mixture gives the:Read the answer and worked solution →Gas collected over water always contains some water vapour, so its measured pressure includes:Read the answer and worked solution →Gas escaping through a pinhole in a balloon into a vacuum is undergoing:Read the answer and worked solution →The unrestricted spreading of molecules through space by random motion is:Read the answer and worked solution →Through the porous wall of a container, the gases passing more rapidly are the ones that are:Read the answer and worked solution →The ratio of two effusion rates is inversely proportional to the ratio of the square roots of their molar:Read the answer and worked solution →The ideal gas law describes gas behaviour poorly at pressures that are:Read the answer and worked solution →Real gases behave most like ideal gases at low pressures and temperatures that are:Read the answer and worked solution →An equation correcting the ideal gas law for molecular size and attraction was published in 1879 by:Read the answer and worked solution →Catch the gas lawsRead the answer and worked solution →Pop the pressure unitsRead the answer and worked solution →Run the gas gatesRead the answer and worked solution →Slice the gas wordsRead the answer and worked solution →Ideal or realRead the answer and worked solution →Sort the gas wordsRead the answer and worked solution →Type the numberRead the answer and worked solution →Gases bingoRead the answer and worked solution →

Worked practice questions

An engineer reports a pressure in SI units. The SI unit of pressure is the:

  1. Pascal
  2. Pendant
  3. Peridot
  4. Plateau
Show answer and solution

Correct answer: A. Pascal

1. Pressure is force spread over an area. 2. One newton acting on one square metre defines the unit. 3. That unit is the pascal. _Source: OpenStax Chemistry 2e, Chapter 9, Gases._

Open this question →

The pressure unit torr is named after the inventor of the barometer:

  1. Tomlinson
  2. Torricelli
  3. Trevithick
  4. Thorndike
Show answer and solution

Correct answer: B. Torricelli

1. The instrument measures atmospheric pressure with a liquid column. 2. Its inventor gave his name to the unit. 3. That inventor was Evangelista Torricelli. _Source: OpenStax Chemistry 2e, Chapter 9, Gases._

Open this question →

A water barometer is impractical because normal air pressure supports a water column over:

  1. 10 metres
  2. 10 inches
  3. 10 furlongs
  4. 10 fathoms
Show answer and solution

Correct answer: A. 10 metres

1. The denser the liquid, the shorter the column needed. 2. Water is far less dense than mercury. 3. So a water column runs over 10 metres high. _Source: OpenStax Chemistry 2e, Chapter 9, Gases._

Open this question →

How to practise

  1. Choose a Chemistry question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Chemistry topics

Gas LawsPhysical Chemistry