Gobezoch › Textbooks › Chemistry Grade 11

Chemistry Grade 11 Unit 3: PHYSICAL STATES OF MATTER

national exam questions have come from this unit. It runs 62 pages; one careful study pass takes about 6.1 hours, and its difficulty is moderate among Chemistry units. Each section below lists the questions set from it, with the year, and opens the page that teaches it.

Read this unit
3.2 Kinetic Theory and Properties of Matter · read p. 147
Not asked in a national paper yet.
3.2.1 The Kinetic Theory of Matter · read p. 147
Not asked in a national paper yet.
3.2.2 Properties of Matter · read p. 148
Not asked in a national paper yet.
3.3.1 The Kinetic Molecular Theory of Gases · read p. 149
  • 2018 E.C., Q9 – If a student uses 2 grams of copper (II) oxide and obtains 1.60 grams of copper after reduction, which of the following statements correctly describes its law of definite proportion?
  • 2018 E.C., Q23 – Which of the following statements correctly describes Boyle's law?
  • 2017 E.C., Q66 – Which of the following pair of substances can be considered as examples of the liquid state of matter at room temperature and 1 atm pressure?
  • 2017 E.C., Q22 – What is the density of methane ( ) at a pressure of 900 torr and a temperature of 25°C? ( atm. L/mol. K, 1 atm = 760 torr)
  • 2017 E.C., Q48 – Which statement below describes CORRECTLY the assumptions in the kinetic theory of gases?
  • 2017 E.C., Q23 – It takes $2.25$ minutes for $0.02\,\text{mol}$ of He to diffuse. How long will it take to diffuse for the same amount of methane gas, $CH_4$? (M.wt of He = $4\,\text{g/mol}$, $CH_4 = 16\,\text{g/mol}$)
  • 2017 E.C., Q49 – If the rate of diffusion of a certain unknown gas is half times the rate of diffusion of helium, what will be the molar mass of the unknown gas? (Atomic mass of He= 4.0 g/mole)
  • 2017 E.C., Q67 – Which gas law describes the behavior of gases using the variables: temperature, volume, pressure and number of moles?
  • 2016 E.C., Q57 – "At a given temperature and pressure, equal volumes of different gases contain equal number of molecules", this is known as _______
  • 2016 E.C., Q61 – A sample of a certain gas has a volume of 100 L at 27 °C and 750 torr. The gas is expanded to a volume of 250 L at 200 torr. What is the final temperature of the gas?
  • 2015 E.C., Q62 – Which one of the following statement is TRUE about gases?
  • 2015 E.C., Q37 – Which one of the following gas laws states the volume of a fixed amount of gas maintained at constant pressure is directly proportional to the absolute temperature of the gas?
  • 2015 E.C., Q63 – Which one of the following mathematical expressions is derived from the combination of Boyle's law, Charles' law and Avogadro's law?
  • 2015 E.C., Q40 – In which of the following order of a reaction, a plot of $\ln [A]_t$ versus time is a straight line whose slope is $-k$?
  • 2014 E.C., Q25 – Which of the following statements correctly describes Boyle's Law?
  • 2012 E.C., Q40 – Which of the following substances would you expect to have the highest entropy at 1 atm of pressure?
  • 2009 E.C., Q41 – If 0.454kg of nitroglycerin explodes according to the following reaction: $2\mathrm{C_3H_5(NO_2)_3}\rightarrow 6\mathrm{CO_2}+3\mathrm{N_2}+5\mathrm{H_2}$ What is the total volume of gases in $\mathrm{dm^3}$ produced at
  • 2009 E.C., Q67 – At what condition(s) is the equation, , applicable?
  • 2005 E.C., Q60 – For the reaction: the following experimental results were obtained: mol L s −1 −1 Experiment [A] [B] Rate ( ) 1 0.50 0.50 0.300 2 0.50 0.25 0.075 3 0.25 0.25 0.075 What is the value of the rate constant? L S −1 −1 L S −1
  • 2005 E.C., Q17 – Which of the following properties of a substance does NOT represent an intensive physical property?
3.3 The Gaseous State · read p. 150
Not asked in a national paper yet.
3.3.2 The Gas Laws · read p. 153
Not asked in a national paper yet.
3.4 The Liquid State · read p. 173
  • 2017 E.C., Q50 – A student added boiling chips into a beaker of water while carrying out an activity to determine the boiling point of water. Why do you think the boiling chips are necessary?
  • 2015 E.C., Q6 – Which of the following CORRECTLY relates the vapor pressure of a liquid with its boiling point? Boiling point is
  • 2014 E.C., Q48 – Consider a bottle containing water, water vapor and air in equilibrium. If the temperature decreases slightly, the amount of water vapor:
  • 2014 E.C., Q49 – Why do water droplets collect on the outside of a glass of water on a hot day?
  • 2012 E.C., Q31 – Consider this equilibrium reaction in a sealed container: H2O(g) ⇌ H2O(l). Which one of the following will be the effect on the equilibrium of increasing the temperature from 20°C to 30°C?
3.4.1 Energy Changes in Liquids · read p. 174
Not asked in a national paper yet.
3.5 The Solid State · read p. 181
  • 2018 E.C., Q25 – Two substances X and Y have melting points of 100 °C and 50 °C, respectively. Which substance is more thermally stable as a solid?
  • 2017 E.C., Q27 – What property of an ionic compound can be investigated by heating it in a crucible?
  • 2016 E.C., Q33 – Which of the following is CORRECT about the phase change observed in water?
  • 2016 E.C., Q62 – Which of the following is a CORRECT explanation of the given term?
  • 2015 E.C., Q20 – Which of the properties of solvents WOULD NOT be affected by the formation of a solution with a non-volatile solute?
  • 2012 E.C., Q29 – Which of the following is TRUE for the sublimation of solid carbon dioxide at room temperature and pressure?
  • 2011 E.C., Q62 – Which one of the following is true?
  • 2011 E.C., Q11 – Which of the four colligative properties arises in systems where there is an equilibrium between a liquid solution phase and a second liquid phase?
  • 2011 E.C., Q67 – Another horizontal dashed line at pressure 1 intersects the solid-liquid line and liquid-vapour line, with vertical dashed lines dropping to the temperature axis.]
  • 2010 E.C., Q63 – Which of the following statements is NOT true in relation to the triple point on a single component phase diagram?
  • 2007 E.C., Q11 – Points 4 and 5 sit ON their respective lines; points 1, 2 and 6 sit inside regions.]