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Question 1
This question is about the particle model of matter. |
a) | In the boxes below draw the particle arrangement for a solid, a liquid, and a gas.
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b) | Describe the motion of particles in a solid.
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c) | Describe how the motion of particles in a gas changes as it is heated.
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Question 2
Peter finds a piece of metal which he suspects is gold. |
a) | He decides to find the density of the metal. Describe a method Peter could follow to find the density of the metal.
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b) | Peter records the mass of the metal to be 232 g and the volume of water displaced to be 12 ml. Calculate the density of the metal in kg/m3. 1 ml = 1 x 10-6 m3.
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c) | The table below shows the density of some metals. State the metal that Peter's sample is likely to be.
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Question 3
A student has been asked to find the density of a cube. |
The student uses a micrometer to measure the dimensions of the cube. |
a) | The table below shows the repeat measurements taken. Calculate the average of the 3 length measurements. Give your answer in mm to 2 decimal places.
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b) | State the name of the piece of equipment the student should use to find the mass of the metal block.
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c) | The student turns on the balance and they read -0.23 g before the metal cube is added. State the name of this sort of error.
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d) | The student forgot to press the zero button on the balance and proceeded to record a mass of 539.08 g. Calculate the true mass of the metal block.
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e) | Calculate the density of the metal cube. Give your answer to 1 decimal place in kg/m3.
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Question 4
A student finds an old key and wants to know what it is made from. She decides to find it's density. |
a) | Describe a method that the student could follow to find the density of the key using a eureka can.
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b) | The student has three different measuring cylinders to choose from. Explain which of the measuring cylinders the student should use and why.
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c) | Describe two precautions the student should take to ensure they obtain accurate results.
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d) | The diagram below shows the reading on the measuring cylinder. Record the volume shown on the measuring cylinder.
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e) | The student recorded the mass of the key to be 21.2 g using a top pan balance. Calculate the density of the key. Give your answer to 1 decimal place in g/cm3. 1 ml = 1cm3
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Question 5
This question is about the density of solids. |
a) | Which of these is not a unit for density? A kg/m3 B g/cm2 C kg/cm3 D g/ml
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b) | A student measures the mass of a coin to be 7.12 g. The volume of the coin is 8.17 x 10-5 m3. Calculate the density of the coin. Give your answer to 2 decimal places in kg/m3.
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Question 6
This question is about the density of liquids. |
a) | The table below shows the mass, volume, and density of different liquids. Complete the table for the missing density and mass values.
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b) | The three liquids are poured into a large measuring cylinder and left to settle. The liquids separate and sit on top of each other. Explain why.
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c) | Label the diagram below to show the order of the three liquids in the measuring cylinder.
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Question 7
This question is about the arrangement and movement of particles in water. |
a) | Draw the arrangement of particles in water.
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b) | A student takes an ice cube out of the freezer and leaves it on the table. Describe the change in movement of the particles as the ice cube melts.
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c) | Describe how the motion of the particles in the water changes as the melted ice cube warms up to room temperature.
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Question 8
A student is measuring the density of a piece of paper. |
a) | The student needs to measure the thickness of the paper. Which of the following would be the most suitable? A meter ruler B tape measure C top pan balance D vernier callipers
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b) | The student stacks 100 sheets of paper and uses the vernier callipers to measure the thickness. The student's results are in the table below. Calculate the thickness of a sheet of paper. Give your answer in mm to 3 decimal places.
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c) | The student uses a mass balance to record the mass of 100 sheets of paper. When the student turns the balance on, it reads 0.02 g. The student then places the 100 sheets of paper on the balance and it reads 469.02 g. Calculate the true mass of a piece of paper.
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d) | The student measures the length of the paper to be 297 mm and the width to be 210 mm. Calculate the density of the paper in kg/m3. Give your answer to 1 decimal place.
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Question 9
This question is about identifying a liquid by finding it's density. |
a) | Describe how the student should use the equipment in the diagram to find the mass of the liquid.
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b) | Calculate the mass of the liquid in the measuring cylinder.
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c) | State the volume of liquid in the measuring cylinder.
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d) | Calculate the volume of the liquid in measuring cylinder and use the table below to identify the liquid in g/cm3.
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