Chapter 7 Particulate Nature of Matter MCQ (teacher)

Topical Review MCQ Practice Worksheet- Chapter 7: Particulate Nature of Matter 1. Which statement about matter is true? A Gas particles are the most numerous compared to solids or liquids per unit volume. B Matter has mass and occupies space. C Particles in a liquid are held together by weak forces of attraction. D When a solid is heated, its particles increase in size.

Topical Review MCQ Practice Worksheet- Chapter 7: Particulate Nature of Matter 2 “Solids have a fixed volume.” Which of the following best explains the above statement? A Solid particles are arranged in an orderly manner. B Solid particles are packed closely together with little empty spaces in between. C Solid particles vibrate in their fixed positions. D There are strong attractive forces between the particles of solids. 3 Which statement about gas particles is not correct? A The distance between the particles is very small. B The particles are held together by weak forces of attraction. C The particles have high kinetic energy. D The particles move randomly in all directions. 4. A sealed conical flask contains a substance in solid, liquid and gaseous states. Which statement is correct? A A gas particle has a lower mass than a liquid particle. B Liquid particles move much slower than those in solids. C Liquid particles vibrate about their fixed positions. D Solids have stronger forces of attraction between particles than those in liquids. 5 Why can air be pumped into tires without changing the volume of the tires? A Forces of attractions between particles are strong. B Particles of air lose energy and move more slowly in tires. C Particles of air decrease in size when more air is pumped into the tires. D Distance between particles decreases when more air is pumped into the tires. 6 Q, R and S are the same substance in three different physical states. The properties of Q, R and S are shown in the table below.

Topical Review MCQ Practice Worksheet- Chapter 7: Particulate Nature of Matter characteristics Q R S compressible yes no no has fixed shape no yes no has fixed volume no yes yes Which of the following statements is true? A Particles in Q experience the strongest forces of attraction. B Particles in S are packed much closer than particles in R. C Q has the lowest density. D R is in the liquid state. 7 The liquid level in a thermometer rises when it is placed in a beaker of warm water. Which of the following changes takes place in the liquid of the thermometer at a higher temperature? I The particles become further apart. II The particles expand in sizes. III There is an increase in number of particles. A I only B I and II only C I, II and III D II and III only

Topical Review MCQ Practice Worksheet- Chapter 7: Particulate Nature of Matter 8 Brownian motion proves that particles are in constant random motion. Which is not an example of Brownian motion? A A drop of ink spreads in a beaker of water. B Dust particles appear to ‘dance’ in front of a light source. C The wax of a candle melts as the candle burns. D The whole bus smells of durian if a passenger brings it on board. 9 Which phenomenon is caused by diffusion? A Pollen grains move randomly when suspended on water. B Water particles from surface of a dish of water enters the surrounding air. C When a tea bag is placed in water, the water becomes brown. D Water enters a dry sponge when the sponge is submerged in water.

Topical Review MCQ Practice Worksheet- Chapter 7: Particulate Nature of Matter 10 When an iron rod is heated, it expands. Which statement is true? A The iron particles become bigger. B The iron particles become more strongly attracted to one another. C The mass of the iron rod does not change. D The volume of the iron rod does not change. 11. During cooling, what happens to a substance? A Density remains unchanged. B Mass changes. C Volume and mass change. D Volume changes. 12 What happens to the particles of hot water when it cools down? speed size A decreases stays the same B decreases decreases C increases decreases

Topical Review MCQ Practice Worksheet- Chapter 7: Particulate Nature of Matter D increases stays the same 13 The diagrams show the particles present in a container. Which two diagrams show the process of evaporation? A 1 and 2 B 1 and 3 C 2 and 3 D 3 and 1 14 The table below shows the melting and boiling points of four substances, chlorine, gallium, potassium hydroxide and propanol. substance melting point / °C boiling point / °C chlorine - 103.0 - 34.0 gallium 29.8 2403.0 potassium hydroxide 360.0 1327.0 propanol - 89.0 82.0 Which substance is a liquid at a temperature of 25.0 °C? A gallium B chlorine C propanol D potassium hydroxide

Topical Review MCQ Practice Worksheet- Chapter 7: Particulate Nature of Matter 15 The table shows data about four substances. Which substance has particles that are spread far apart at room temperature? melting point / °C boiling point / °C A –114 –80 B –7 59 C 750 1407 D 1610 2230