Ch 3 practice test answer key

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					Mrs. Lee – Physical Science                                                                        Page 1
                         Chapter 3 Practice Test Answer Key

______ a      1) All of the following are measurements used when working with a gas except ______.
              a) area         b) volume     c) temperature      d) pressure

______ d      2) A liquid has a ______.
              a) constant temperature        b) definite shape
              c) crystal structure           d) definite volume

______ b      3) The change from a gas to a liquid is called ______.
              a) evaporation       b) condensation          c) melting      d) sublimation

______ b      4) Which of the following is NOT a characteristic of crystalline solids?
              a) particles arranged in repeating patterns
              b) becomes softer and softer as temperature rises
              c) made up of crystals
              d) has a distinct melting point

______ c      5) Boyle’s law states that as the pressure of a gas increases, its ______.
              a) volume increases b) temperature increase
              c) volume decreases d) temperature decreases

______ d      6) Which of the following is NOT an example of vaporization?
              a) water rising into dry air that moves over the ocean
              b) bubbles forming as water boils
              c) wet pavement drying after a rain shower
              d) water droplets forming on a mirror

______ c      7) A substance which takes the shape and volume of its container is a ______.
              a) solid      b) liquid      c) gas        d) crystal

______ d      8) Because of surface tension, a liquid ______.
              a) resists flowing                    b) forms a crystalline solid
              c) takes the shape of its container   d) forms droplets

______ a      9) As the gas in a rigid container is heated, its ______.
              a) pressure increases          b) volume increases
              c) pressure decreases          d) volume decreases

______ b      10) A liquid with a low viscosity ______.
              a) has a definite shape       b) flows quickly
              c) flows slowly               d) fills its container

______ b       11) According to Charles’s law, when the temperature of a gas increases in a flexible
               container, its ______ increases.
              a) pressure      b) volume




Ch 3 Practice Test Answer Key                       1
Mrs. Lee – Physical Science                                                                             Page 2
                         Chapter 3 Practice Test Answer Key

______ b       12) The faster gas particles are moving, the ______ their energy and the ______ the
               temperature.
              a) lesser, lower       b) greater, higher

______ a       13) At its ______, the particles of a solid are vibrating so fast that they break free from
               their fixed positions.
              a) melting point        b) freezing point

______ c       14) ______ occurs when the particles on the surface of a solid are directly released as a
               gas.
              a) Melting    b) Freezing c) Sublimation            d) Evaporation

______ a      15) When the temperature of a gas in a rigid container increases, its ______ increases.
              a) pressure   b) temperature         c) surface tension     d) liquid

______ a       16) Bubbles of air exhaled by an underwater swimmer increase in volume as they rise
               to the water’s surface.
              a) True         b) False

______ b (pressure) 17) The volume of a gas is the result of gas particles pushing on the walls of the
              container.
             a) True       b) False

______ b (evaporation)     18) During boiling, only particles on the surface of the liquid gain
              enough energy to become gas.
             a) True       b) False

______ b (melting) 19) The change from a solid to a liquid is condensation.
             a) True      b) False

______ a       20) Gas pressure is found by dividing the force of its outward push by the area it
               pushes on.
              a) True        b) False

______ c      21) The space that matter fills is called ______.
              a) pressure    b) area         c) volume      d) mass

______ b      22) Which of the following describes a solid?
              a) definite volume but no definite shape      b) definite shape and definite volume
              c) neither definite shape nor definite volume d) definite shape but no definite volume

______ a      23) Which of the following describes a liquid?
              a) definite volume but no definite shape       b) definite shape and definite volume
              c) neither definite shape nor definite volume d) definite shape but no definite volume




Ch 3 Practice Test Answer Key                       2
Mrs. Lee – Physical Science                                                                          Page 3
                        Chapter 3 Practice Test Answer Key

______ c      24) Which of the following describes a gas?
              a) definite volume but no definite shape      b) definite shape and definite volume
              c) neither definite shape nor definite volume d) definite shape but no definite volume

______ c      25) Anything that has mass and takes up space is called ______.
              a) a solution b) an element c) matter       d) thermal

______ b       26) A pure substance made of two or more elements chemically combined in a set ratio
               is called a(n) ______.
              a) atom          b) compound c) solution   d) mixture

______ b      27) Every chemical or physical change in matter includes a change in ______.
              a) state      b) energy      c) color      d) melting point

______ a      28) A change in state from solid to liquid is an example of ______.
              a) a physical change b) a chemical change c) oxidation d) electrolysis

______ c       29) A wet towel is hanging on a clothesline in the sun. The towel dries by the process
               of ______.
              a) boiling    b) condensation        c) evaporation         d) sublimation

______ c      30) Which of the following correctly describes a gas?
              a) The particles do not move
              b) The particles are closely locked in position and can only vibrate
              c) The particles are free to move independently, colliding frequently
              d) The particles are closely packed but have enough energy to slide past one another

______ a      31) Which state of matter has both definite volume and definite shape?
              a) solid      b) liquid       d) gas         d) plasma

______ b       32) As water vapor condenses into liquid water, the relative freedom of motion of the
               water molecules ______.
              a) increases          b) decreases             c) stays the same
              d) drops to zero because the particles are no longer moving

______ c       33) A gas at constant temperature is confined to a cylinder with a movable piston. The
               piston is slowly pushed into the cylinder, decreasing the volume of the gas. The
               pressure increases. What are the variables in this experiment?
              a) temperature and time        b) time and volume
              c) volume and pressure         d) pressure and temperature

______ b       34) What principle states that when the temperature of a gas at constant volume is
               increased, the pressure of the gas increases, and when the temperature is decreased, the
               pressure of the gas decreases?
              a) Gauss’s law         b) the temperature and pressure relationship
              c) Boyle’s law         d) Charles’s law

Ch 3 Practice Test Answer Key                      3
Mrs. Lee – Physical Science                                                                         Page 4
                         Chapter 3 Practice Test Answer Key

______ d      35) Boyle’s law describes the relationship between ______.
              a) the pressure and temperature of a gas     b) the volume and temperature of a gas
              c) the density and volume of a gas           d) the pressure and volume of a gas

______ a      36) Charles’s law states that ______.
              a) when the temperature of a gas at constant pressure is increased, its volume
                  increases, and when the temperature of a gas is decreased, its volume decreases.
              b) When the temperature of a gas at constant volume is increased, the pressure of the
                  gas increases, and when the temperature is decreased, the pressure decreases
              c) When the pressure of a gas at constant temperature is increased, the volume of the
                  gas decreases, and when the pressure is decreased, the volume increases
              d) When the pressure of a gas at constant temperature is increased, its mass decreases,
                  and when the pressure is decreased, the mass increases

______ a      37) Compared to particles in a liquid, the particles in a gas have ______.
              a) more energy of motion              b) less energy of motion
              c) the same energy of motion          d) almost no energy of motion

______ b       38) According to Charles’s law, when the temperature of a gas increases at a constant
               pressure, the volume of the gas ______.
              a) stays the same     b) increases c) decreases d) increases, then decreases

______ b      39) Liquids with high viscosity ______.
               a) flow faster than liquids with low viscosity
               b) flow slower than liquids with low viscosity
               c) flow at the same rate as liquids with low viscosity
               d) do not flow at all

______ b      40) The particles in a solid are ______.
              a) completely motionless        b) locked closely in position and can only vibrate
              c) loosely connected and can collide with and move past one another
              d) free to move independently, colliding frequently

______ c      41) A gas has ______.
              a) a definite shape and volume        b) a definite shape, but no definite volume
              c) no definite shape or volume        d) no definite shape, but a definite volume

______ b      42) The pressure of a gas is the ______.
              a) force of its outward push divided by the length of the walls of the container
              b) force of its outward push divided by the area of the walls of the container
              c) area of the walls of the container divided by the temperature of the gas
              d) temperature of the gas divided by the area of the walls of the container

______ a      43) Vaporization that takes place only on the surface of a liquid is called ______.
              a) evaporation         b) boiling    c) condensation          d) sublimation

Ch 3 Practice Test Answer Key                       4
Mrs. Lee – Physical Science                                                                          Page 5
                        Chapter 3 Practice Test Answer Key

______ a      44) A change in state from a solid to a liquid is called ______.
              a) melting    b) freezing     c) evaporation           d) condensation

______ c      45) The boiling point of a substance depends on the ______.
              a) mass of the sample                       b) volume of the sample
              c) pressure of the air above the sample     d) size of the sample’s container

Use the diagram below to answer the following 2 questions:




______ b      46) Interpreting Diagrams: What is the volume of this gas at a pressure of 60 kPa?
              a) 50          b) 100       c) 150

______ a      47) Interpreting Diagrams: What is the pressure of this gas at a volume of 200 mL?
              a) 30 kPa      b) 40 kPa    c) 50 kPa

Use the diagram below to answer the following 3 questions:




______ b      48) Interpreting Diagrams: Which container shows the particles of a liquid?
              a) container A        b) container B       c) container C

______ c      49) Interpreting Diagrams: Contain C is filled with a ______.
              a) solid       b) liquid     c) gas

______ a       50) Inferring: In which container do the particles stay in place, but move slightly back
               and forth?
              a) container A         b) container B         c) container C

Ch 3 Practice Test Answer Key                       5

				
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