Name: ________________________________________

Yr. 10 Science Exam Multiple Choice Answer Sheet

Circle the letter indicating the best answer.

1 A B C D 2 A B C D

3 A B C D 4 A B C D 5 A B C D 6 A B C D

7 A B C D 8 A B C D 9 A B C D 10 A B C D

11 A B C D 12 A B C D 13 A B C D

14 A B C D 15 A B C D 16 A B C D 17 A B C D

18 A B C D 19 A B C D 20 A B C D 21 A B C D

22 A B C D 23 A B C D 24 A B C D

25 A B C D 26 A B C D 27 A B C D 28 A B C D

29 A B C D 30 A B C D

YEAR 10 SCIENCE

EXAMINATION - SEMESTER 1, 2019

MULTIPLE-CHOICE - PART A

AND WRITTEN ANSWERS - PART B

STUDENT NAME:

TEACHER NAME:

DATE:

MARKS ALLOCATION

Topic Section Marks

Physics Multiple Choice /15

Short Answer questions /45

Chemistry Multiple Choice /15

Short Answer questions /45

Total 120

USE ATTACHED ANSWER GRID FOR MULTIPLE CHOICE

TIME ALLOWED FOR THIS EXAM: Reading time before commencing work: 10 minutes

Working time for this paper: 1 hour 50 minutes

MATERIAL REQUIRED / RECOMMENDED FOR THIS PAPER: To be provided by the supervisor: - This question and answer booklet

To be provided by the candidate: - Pens, pencils, eraser and ruler -

IMPORTANT NOTE TO CANDIDATES:

No other items may be taken into the examination room. It is your responsibility to ensure that you do not have any unauthorised notes or other items of a non-personal nature in the examination room. If you have any unauthorised material with you, hand it to the supervisor BEFORE reading any further. All iPads and mobile phones must be turned off and in your bag along with any other devices and notes. Bags are to be closed and placed under the desk.

INSTRUCTION TO CANDIDATES: 1. Read through the paper, Part A and Part B, to familiarise yourself with all the questions.

2. Use a blue or black ballpoint / ink pen for written answers. Use pencil for drawing the graph.

3. Write your answers in the booklets.

4. Should you require more space than you have been given please use the spare sheet (at the back of this booklet) and ensure that you include your name and the question / statement to which you are responding.

AT THE END OF THE EXAMINATION:

- Any planning sheets or other pieces of paper MUST be handed in with this booklet. - At the end of the examination make sure that your name is on your booklet and any other pieces of

paper used.

PHYSICS MULTIPLE-CHOICE QUESTIONS:

1. Momentum is _________________ in a collision

a. Lost b. Gained c. Conserved d. Destroyed

2. A car is driving at a constant velocity on a flat road. What is the best description of the forces acting on the car?

a. There are no forces acting on the car

b. The forces acting on the car are balanced

c. There is only one force acting on the car

d. The force of gravity is making the car move forwards

3. According to this displacement – time graph the object is:

a. Stopped

b. Accelerating

c. Moving at a constant velocity

d. Decelerating

4. Pedro is running in a race. He does 4 laps of a 400m oval. What is his final displacement?

a. 1600m.

b. 800m.

c. 400m.

d. 0m.

5. The picture shows a skater competing in a half pipe competition.

Where will his kinetic energy be largest?

a. At the top of the half pipe

b. A quarter of the way down the half pipe.

c. At the bottom of the half pipe.

d. At the top of the other side of the half pipe.

d

(km)

t (hrs)

6. Which of the following is best explained by Newton’s third law?

a. Unbelted passengers will be thrown forward when a car stops suddenly.

b. A gun recoils when a shot is fired.

c. The acceleration of an object when a force is applied depends on the mass of the object.

d. The weight of an object varies from planet to planet.

7. What is the correct unit for velocity?

a. metres

b. metres per second per second

c. metres per second

d. metres per second squared

8. Three students, Jane, Indira and Charlotte run in a 100m sprint on a school sports day. The displacement (or distance) / time graph of their motion is shown below:

Select the alternative below that correctly orders describes their velocity.

a. Jane is fastest and Indira is slowest.

b. Indira is fastest and Charlotte is slowest.

c. Jane is fastest and Charlotte is slowest.

d. Charlotte is fastest and Jane is slowest.

9. “All bodies remain in a state of rest or uniform motion unless acted upon by an external unbalanced force.” This property of bodies is called:

a. mass

b. inertia

c. density

d. weight

10. Which object would have the most gravitational potential energy?

a. a cheetah running at 100km/h

b. an elephant running at 20km/h

c. a cheetah standing on top of a cliff

d. an elephant standing on top of a cliff

11. A cyclist rides a hilly course between points P and U, as shown in the diagram:

The section that he is most likely to be decelerating is:

a. from Q to R

b. from R to S.

c. from T to U

d. from P to Q

12. Which of the following is the best description of Work?

a. Work is done when the acceleration of an object is changing

b. Work is done when a force acts on an object, moving it a certain distance

c. Work is conserved in a collision

d. Work is done when an object is stationary

13. Which of the following is NOT a unit of velocity?

a. km/h

b. m/s

c. kg

d. km/s

14. Which of the following options would increase the momentum of an object?

a. increasing its potential energy

b. increasing its mass

c. decreasing its potential energy

d. decreasing its mass

15. Which of the following statements about acceleration is false?

a. acceleration is measured in m/s2

b. acceleration is the rate of change of velocity

c. acceleration is the rate of change of displacement

d. acceleration can be positive or negative

Chemistry MULTIPLE-CHOICE QUESTIONS:

16. Which of the following particles determines “Atomic number” that is used in determining the position of an

element within the periodic table?

a. protons

b. neutrons

c. electrons

d. protons and neutrons

17. Sodium has 11 electrons. What is its electron configuration?

a. 12

b. 2,8,1

c. 2,10

d. 10,2

18 An element is composed of atoms with….?

a. different atomic numbers

b. same mass numbers

c. same atomic numbers

d. different mass numbers

19 Covalent bonding occurs between:

a. metal atoms

b. metal and non-metal atoms

c. non-metal and non-metal atoms

d. molecules and lattices

20 Which group of elements can be described by the following statement? ‘These elements have quite a low melting point and are soft and highly reactive. In their pure state, they often resemble Plasticine that, when cut, is very briefly shiny silver before reacting with the air to become white again.’

a. alkali metals

b. alkaline earth metals

c. transition metals

d. metalloids

21 How many valence electrons does a fluorine atom have? (Use the attached periodic table if needed)

a. 9

b. 7

c. 10

d. 8

22 This atom represents the element:

a. Copper

b. Oxygen

c. Nitrogen

d. Carbon

23 In a chemical reaction, a potassium atom is most likely to:

a. lose two electrons.

b. gain two electrons.

c. lose one electron.

d. gain one electron.

24 A monomer is a:

a. product of a monomatic reaction.

b. small molecule that makes up a polymer.

c. synthetic polymer.

d. compound that can be synthesised in a laboratory.

25 When lead nitrate solution and potassium iodide solution react a bright yellow solid forms. This is an

example of:

a. Precipitation

b. Decomposition

c. Neutralisation

d. Synthesis

26 When you heat a substance the particles in it gains:

a. Light energy

b. Kinetic energy

c. Chemical potential energy

d. Gravitational potential energy

27 Catalysts:

a. Speed up a reaction and react

b. Don’t speed up a reaction and react

c. Speed up a reaction but don’t react

d. Don’t speed up a reaction and don’t react

28 Propane + oxygen carbon dioxide + water

The products of this reaction are:

a. Propane and carbon dioxide

b. Carbon dioxide and water

c. Propane and oxygen

d. Water and oxygen

29 Combustion involves

a. A reactant slowly having oxygen removed

b. A reactant reacting slowly with oxygen

c. A reactant reacting very rapidly with oxygen

d. A reaction that does not involve oxygen

30 2Mg + O2 2MgO

The above reaction is an example of

a. Combustion

b. Oxidation

c. Combination

d. All of the above

***END OF MULTIPLE CHOICE***

SHORT ANSWERS – PART B

ENERGY AND MOTION

Formulae that you might need to use:

Velocity: 𝒗 =𝒅

𝒕 Acceleration: 𝒂 =

𝒗−𝒖

𝒕 Force: 𝑭 = 𝒎𝒂

Work done: 𝑾 = 𝑭𝒅 Kinetic Energy: 𝑲𝑬 = 𝟏

𝟐𝒎𝒗𝟐 Momentum: 𝑷 = 𝒎𝒗

Gravitational Potential energy: 𝑷𝑬 = 𝒎𝒈𝒉 Acceleration due to gravity: 𝒈 = 𝟗. 𝟖𝒎/𝒔𝟐

Show all your working. You will be awarded:

1 mark for identifying the information you’ve been given,

1 mark for picking the correct equation,

1 mark for getting the right answer and

1 mark for giving the correct unit.

1. a) Scalar quantities only have a magnitude (size), while vector quantities have a magnitude and a

direction. Place the following quantities into the correct column in the table:

Mass; speed; velocity; displacement; weight; distance

Scalar quantity Vector quantity

(3 marks)

b) Below are two statements –identify which of Newtons 3 laws they are….

e.g. First, Second or Third

Newtons__________ law = ‘For every action, there is an equal and opposite reaction on the other object.

Newtons ________ law = ‘An object remains at rest or in constant motion in a straight line unless acted on

by a net unbalanced force.’ (2 marks)

2. Ben and Jordan went out cycling one day. They stopped once for lunch.

The Distance time graph below shows how far they travelled during the ride.

Use A, B, C & D to identify different parts of their ride.

a. How far did they travel in total? (1 mark)

b. For how long were they cycling before they stopped? (1 mark)

c. Between which two points did they travel fastest? (1 mark)

d. For how long did they stop for lunch? (1 Mark)

3 a. A car travels 900m in 1 minute. What is its velocity in metres per second? (4 marks)

b. A motorbike is traveling at 5m/s and accelerates to a velocity of 32m/s. If it takes 5 seconds to

reach this velocity, what is the motorbike’s acceleration? (4 Marks)

10

20

30

40

50

1 2 3 4 5 6

Displacement

(km East)

Time (h) A

B C

D

4. Kim weighs 75kg. He dives from a 10m diving board: -

a) How much gravitational potential energy does he have when he is standing

. on the board waiting to dive?

(4 marks)

b) How much energy will have been converted to kinetic energy by the time that Kim has fallen by 2

metres?

(4 marks)

5. A model car is rolled into a model truck. When the car hits the truck it is travelling at 8m/s and the truck is not moving.

After the collision the car is not moving and the truck is rolling backwards.

a) Use the information on the diagram and the law of conservation of momentum to calculate the

velocity of the truck after the collision.

(4 marks)

Velocity = 8 m/s Velocity = 0 m/s

Mass = 3kg Mass = 9kg

b) If, instead of stopping, the car became stuck to the truck after the collision, would the final

velocity increase or decrease? Explain why you think this.

(2 marks)

6. The data table below shows how a Dominoes Pizza delivery driver’s velocity changes as she drives between two sets of traffic lights on Marmion Ave.

Time (s) Velocity (m/s North)

0 0

2 2

3 4

4 6

5 8

6 8

7 8

8 8

9 4

10 0

a) On the graph paper provided, draw a velocity time graph which shows the delivery driver’s

journey.

Remember to use LUST and to plot your points accurately using a pencil and ruler.

(6 marks)

b) Use your graph to calculate the acceleration of the delivery driver during the last two seconds of

the journey.

(4 marks)

c) Use your graph to calculate how far the delivery driver travelled during his journey.

(4 marks)

Chemistry - Periodic Table and Reactions

You might need to refer to the periodic table – page 3

7. Complete the table below by matching the bond type with the correct description. Use the terms

covalent, ionic and metallic in your answer.

Types of Bonding Description

Occurs between metal ions. There is a ‘sea’ of electrons.

Occurs between two non-metal atoms. Atoms share electrons

Occurs between a metal and a non-metal atom. Atoms transfer electrons.

(3 marks)

8. Answer the following questions about Magnesium (Mg) – it has an atomic number of 12.

What element sits to the left of Magnesium on the periodic table?

______________________________________________________________________

How many protons would be in the nucleus of a magnesium atom?

______________________________________________________________________

How many electrons would be in a magnesium atom?

______________________________________________________________________

What is the electron configuration of a magnesium atom?

______________________________________________________________________

(5 marks)

9. Briefly explain why the Helium and Neon are known as Inert gases.

(1 mark)

10 Circle the correct explanation (i or ii) for the following two situations…

A – When dissolving a teaspoon of coffee, if comparing a mug of hot water and a mug of cold water…….

i The mug of hot water will dissolve the coffee faster, due to the increased temperature and greater kinetic energy.

OR

ii The mug of cold water will dissolve the coffee faster because the lower temperature will cause the particles to move or shiver with cold.

B - When dissolving sugar in a cup of room-temperature water, if comparing a whole cube of sugar to a teaspoon of granulated sugar

i The whole cube of sugar will dissolve more quickly because it is larger.

OR

Ii Granulated sugar will dissolve faster because it has a greater surface area.

(2 marks)

11 Use the chemical equation below to answer the following questions:

2Al2O3 → 4Al + 3O2

Identify one product in this reaction_______________________

Is this chemical equation balanced? __________________

Explain your answer. ________________________________________________________

Identify this type of reaction? ______________________ (4 marks)

G

12 Describe the change (what and where) in the “electron structure” that occurs when a sodium atom

becomes a positively charged sodium ion “Na +”?

(2 marks)

13 Explain in terms of the “positive and negative charges “why the formula for Magnesium Chloride is

“MgCl2 ” and not “MgCl”

(3 marks)

14 a) Draw a labelled diagram to describe metallic bonding at an atomic level in the box below.

(2 marks)

b) Using the labels in your diagram to explain why metals can conduct “electricity”

(2 marks)

15 a) Knowing that:

i) – a metal + an acid a salt + hydrogen gas.

Write a balanced symbol equation for the reaction of zinc with dilute hydrochloric acid.

______________________________________________________________________

b) Knowing that:

ii) a metal oxide + an acid a metal salt + water

Write a balanced symbol equation for the reaction of magnesium oxide with nitric acid

______________________________________________________________________

(4 marks)

16. Jim and Bec devised different methods to dissolve a vitamin C tablet in 100 mL of water in a beaker. They both believed their method would dissolve the tablet the fastest and made a bet. To determine the winner of the bet, they decided to run the experiments to find out which method dissolved the tablet the fastest.

A control was run first – a whole tablet was dissolved in 100 mL of water at 20°C.

Jim dissolved his tablet in 100 mL of water after he had heated it to 40°C.

Bec broke her tablet into four and then dissolved the pieces in 100 mL of water at 20°C.

a- Identify the “Dependent variable” that was similar in both experiments (1 mark)

b- Identify the independent variable for Jim’s experiment?

(1 mark)

c- Identify the independent variable for Bec’s experiment?

(1 mark)

d- Using the variables you identified for either Jim or Bec’s experiment,

write a hypothesis (as an “If ……. then ……… statement”)

(2 marks)

17. Reaction rates can be affected by temperature, concentration, surface area and catalysts.

Pick any one of these factors and explain how and why it changes the rate of a reaction.

You should include a description of how reactions happen (collision theory) and what effect your factor has on this, a labelled diagram may help your explanation.

(5 marks)

18. Group 1 metals become more reactive as you move down the group, while Group 7 elements become less reactive as you move down the group.

Explain why this is the case …..

(Hints- you should refer to, electron affinity, positive and negative charges, number of valence

electrons in outer shell and the size of nuclei).

(6 marks)

END OF EXAMINATION