Chapter 2 Practice Paper: Exploring Diversity of Matter by Physical Properties — question paper

Section A: Multiple-choice questions[10 marks]

Answer all questions. For each question, write the letter (A, B, C or D) of the correct answer in the brackets provided.

1. 1

   Three cubes each have a volume of 8 cm³. Cube P has a mass of 4 g, cube Q has a mass of 8 g and cube R has a mass of 24 g. The greatest density is

   1. Acube R.
   2. Bcube P.
   3. Ccube Q.
   4. Dthe same for all three, because the volumes are equal.
   ( )
2. 2

   A magnet picks up a steel paperclip but not a plastic bead. The property being used is

   1. Aboiling point
   2. Bflexibility
   3. Cmagnetism
   4. Dhardness
   ( )
3. 3

   Which instrument should be used to measure 80 cm³ of water?

   1. Aa 250 cm³ beaker
   2. Ba measuring cylinder
   3. Ca metre rule
   4. Dan electronic balance
   ( )
4. 4

   An object floats in a liquid when its density is

   1. Agreater than the density of the liquid.
   2. Bexactly 1 g/cm³ in every liquid.
   3. Cequal to its mass.
   4. Dlower than the density of the liquid.
   ( )
5. 5

   A bag of flour has a mass of 2.5 kg. What is this mass in grams?

   1. A2500 g
   2. B25 g
   3. C250 g
   4. D0.25 g
   ( )
6. 6

   A tile is described as hard. This means it

   1. Abends easily.
   2. Blets heat through quickly.
   3. Cresists being scratched.
   4. Ddissolves in water.
   ( )
7. 7

   A cooking pan needs a base that lets heat reach the food. The base should have

   1. Aa very low density only.
   2. Bpoor electrical conductivity only.
   3. Cno melting point.
   4. Dhigh thermal conductivity.
   ( )
8. 8

   The volume of a small irregular stone is found by

   1. Ameasuring only its length with a ruler.
   2. Bdisplacement of water in a measuring cylinder.
   3. Cfinding its boiling point.
   4. Dpaper chromatography.
   ( )
9. 9

   Two blocks have the same mass. Block X has a smaller volume than block Y. Block X has

   1. Athe higher density.
   2. Bthe lower density.
   3. Cthe same density.
   4. Dno mass.
   ( )
10. 10

    A strip of material bends without breaking. The property shown is

    1. Aelectrical conductivity.
    2. Bmelting point.
    3. Cflexibility.
    4. Dstrength only when it snaps.
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided. Show your working for calculations.

1. 1

   A student pours cooking oil into an empty measuring cylinder. The reading goes from 20 cm³ to 70 cm³. The mass of the oil is 46 g.

   1. (a)

      Calculate the volume of oil that was poured in.

      volume =cm³[2]
   2. (b)

      Calculate the density of the oil.

      density =g/cm³[2]
   3. (c)

      The oil is then poured gently onto water. Predict whether it forms a layer on top, and use the two densities in your answer. Water has a density of 1.0 g/cm³.

      [2]
2. 2

   A student compares materials for the hand-grip of a bicycle that is left in the afternoon sun.

   1. (a)

      Material P lets heat through very easily and does not bend. Material Q lets very little heat through and does not bend. State which material is the better sun-heated grip, and name the property you used.

      [2]
   2. (b)

      Explain why a grip that lets heat through easily feels unpleasant after the bicycle has stood in the sun.

      [1]
   3. (c)

      State one other physical property that would matter for a handle, and why.

      [2]
3. 3

   An overflow can is filled to the spout. A metal charm is lowered in until it is fully under the water. The water that spills into a beaker has a mass of 18 g. The density of water is 1.0 g/cm³. The charm has a mass of 45 g.

   1. (a)

      Calculate the volume of water that spilled, and state the volume of the charm.

      [2]
   2. (b)

      Calculate the density of the charm.

      density =g/cm³[2]
   3. (c)

      State why the can must already be full to the spout before the charm is added.

      [1]
4. 4

   Physical properties are used to choose materials.

   1. (a)

      Name the physical property used when copper is chosen for electrical wires.

      [1]
   2. (b)

      Name the physical property that describes how well a material resists scratching.

      [1]
   3. (c)

      State one difference between melting point and strength.

      [2]