Quiz about S2M2 - Science 9

Question 1

Abbas investigates the reaction of zinc with hydrochloric acid. He pours 25 cubic centimeters of the acid into a conical flask. He adds small pieces of zinc. He collects the gas in a syringe.

What gas is produced and trapped in the syringe?

Accepted Answer

hydrogen

Answer

oxygen

Answer

carbon dioxide

Answer

nitrogen

Question 2

Nico made an experiment where he added metal to an acid. He recorded the amount of gas produced.

He plots a graph of his results.

Between which times is the reaction fastest?

Accepted Answer

between 0 and 1 minute

Answer

between 2 and 3 minutes

Answer

between 3 and 4 minutes

Answer

there is no enough evidence

Question 3

Vika wanted to find out how the rate of reaction changes if he increases the concentration of acid that would react to metal.

Which two variables he should keep the same in his investigation?

Accepted Answer

the temperature of the acid and the surface area of the metal

Answer

the amount of light and time of chemical reaction between an acid and metal

Answer

the amount of catalyst and the amount of an acid

Answer

the temperature of catalyst and the amount of light exposed to the reaction.

Question 4

Arifa investigates the reaction of sodium thiosulfate solution with hydrochloric acid.

One of the products of the reaction is sulfur. This forms as a solid.

As sulfur is made, it hides the cross under the conical flask. Arifa measures the times taken for the cross to disappear.

Arifa wants to find out how changing the temperature affects the rate of the reaction.

Name the variable Arifa measures.

Accepted Answer

time of reaction

Answer

temperature

Answer

concentration of the acid

Answer

amount of substanace

Question 5

Arifa made an investigation on the reaction of sodium thiosulfate solution with hydrochloric acid.

Arifa recorded the results in the table below.

Find the missing average.

Accepted Answer

200

Answer

201

Answer

202

Answer

203

Question 6

Amanda investigates the reaction of hydrochloric acid with calcium carbonate.

The equation for the reaction is:

hydrochloric acid + calcium carbonate --> calcium chloride + carbon dioxide + water

Predict which product of the reaction is formed as a gas

Accepted Answer

Carbon Dioxide

Answer

Oxygen

Answer

Nitrogen

Answer

Water Vapor

Question 7

Amanda set up the apparatus below to test whether or not the gas will produce when an acid reacts with a carbonate compound.

Amanda predicts that, as the reaction progresses, the mass of the reaction mixture in the flask will decrease.

Which of the reasons below best explains why the mass decreases?

Accepted Answer

the product that is formed as a gas escapes into the air

Answer

the product that is formed as a gas dissolved in the reaction mixture

Answer

the product that is formed as a gas is made up of atoms of two elements.

Answer

the product that is formed as a gas in an invisible gas.

Question 8

Amanda records the mass of the reactant mixture (metal and acid) every minute. She plots a graph of his results.

Predict which of the graphs below best represents Rashid's results.

Accepted Answer

C

Answer

A

Answer

B

Question 9

Amanda wants to investigate how the size of the pieces of calcium carbonate affects the reaction rate.

She has three sizes of calcium carbonate pieces - big lumps, small lumps, and powder.

She decides to measure the time taken for 1.0 g of gas to be made with each size of calcium carbonate piece.

Name the variable she changes.

Accepted Answer

surface area of calcium carbonate

Answer

type of acid used

Answer

amount of metal used

Answer

time of the reaction

Question 10

Amanda finds that the powder reacts most quickly.

Which of the reasons below best explains why?

Accepted Answer

for a certain mass of calcium carbonate, the powder has the biggest surface area

Answer

for a certain mass of calcium carbonate, the powder has the smallest surface area

Answer

for a certain mass of calcium carbonate, the powder has the highest concentration

Answer

all of the above

Question 11

The equation below shows the products when hydrogen peroxide decomposes:

hydrogen peroxide --> water + oxygen

Manganese (IV) Oxide catalyses the reaction.

What is a catalyst?

Accepted Answer

is a substance that increases the speed of chemical reaction without being consumed in the process

Answer

it is a substance that inhibits the rate of reaction by being consumed in the process

Answer

is a substance that initiates the chemical reaction that sustains the process for a period of time

Answer

is a substance that stops the chemical reaction without itself being consumed in the process.

Question 12

The international unit of force is

Accepted Answer

Newton

Answer

Meter Square

Answer

Torr

Answer

Kilogram

Question 13

The international unit of Pressure is

Accepted Answer

Newton

Answer

Meter Square

Answer

Torr

Answer

Kilogram

Question 14

A student wants to find the density of a brick. He measures the sides of the brick as shown in the diagram below.

He measures the mass of the brick and find that it is 240 g. What is the density of the brick?

Accepted Answer

0.2

Answer

0.1

Answer

0.3

Answer

0.4

Question 15

A mechanic is using a hydraulic jack to lift a car.

Here is a simple diagram of the hydraulic jack.

The weight of the car is 5000 N. The area of the piston that lifts the car is 0.25 meter square

What pressure is needed in the liquid to lift the car?

Accepted Answer

20,000

Answer

2,000

Answer

200,000

Answer

2,000,000

Question 16

Anyam blows up a balloon and seals it.

If Anyam leave the balloons in the sunshine so that the gas inside gets hotter, what do you think will happen?

Accepted Answer

The gas particles inside the balloon will increase its kinetic energy resulting to the increase in the balloon's size

Answer

The gas particles inside the balloon will decrease its kinetic energy resulting to the decrease in the balloon's size

Answer

The gas particles inside the balloon will increase its kinetic energy resulting to the decrease in the balloon's size

Answer

The gas particles inside the balloon will decrease its kinetic energy resulting to the increase in the balloon's size

Question 17

The table below shows the densities of different materials.

Decide whether the statement below is true or false.

10 cubic centimeters of iron has a smaller mass than 10 cubic centimeters of wood.

Accepted Answer

False

Answer

True

Question 18

A fish can move higher and lower in the water. It has a sac inside it called a swim bladder. If the fish fills the sac with air from its gills, it will float up tot he surface. Explain why.

Accepted Answer

because the air inside the swim bladder makes the fish less dense than the water

Answer

because the gills has specialised cells that controls the density of the fish

Answer

the fish may float and sink whenever it wants because it is designed to swim in the ocean

Answer

The volume of the fish decrease when air gets inside the swim bladder making it more dense than water.

Question 19

Which of these statements about the way that scientists work today is NOT correct?

Accepted Answer

It is unusual for scientists to read about the work of other scientists.

Answer

Scientists share their ideas and scientific evidence in publications that others read.

Answer

Scientist use creative ideas to interpret the evidence that they collect in experiments.

Answer

It is possible to make measurements that are more precise and accurate using new technology.

Question 20

You are planning an investigation. Which of these things do you NOT do?

Accepted Answer

take precise and accurate results

Answer

decide on a question to investigate

Answer

decide which results to record

Answer

work out how to work safely

Question 21

Jamal sits at the end of the see-saw. Jamal has a weight of 200 N.

Jamal's brother has a mass of 400 N. he tries to balance the see-saw.

Where should he sit on the see-saw to make it balance?

Accepted Answer

between the pivot and the end of the seesaw

Answer

at the opposite end to the seesaw

Answer

At the pivot of the seesaw

Answer

At the end where his brother sits

Question 22

Jamal sits at the end of the see-saw. Jamal has a weight of 200 N.

Jamal's brother has a mass of 400 N. he tries to balance the see-saw.

Where should he sit on the see-saw to make it balance?

Accepted Answer

between the pivot and the end of the seesaw

Answer

at the opposite end to the seesaw

Answer

At the pivot of the seesaw

Answer

At the end where his brother sits

Question 23

It pertains the two plates with an insulator between them, that can be charged

Accepted Answer

Capacitor

Answer

Dielectric

Answer

Pixels

Answer

CCD

Question 24

In this type of circuit all the components can be turned on or off independently

Accepted Answer

Parallel Circuit

Answer

Battery

Answer

Series Circuit

Answer

Switch

Question 25

The circuit below contains two special switches. The switch on the left can be flipped between connections 1 and 3. The switch on the right can be flipped between connections 2 and 4.

This circuit can be used to control the lights at the top and bottom of a staircase.

What happens to the light bulbs when the right switch is flipped to 2.

Accepted Answer

the bulb will turn on

Answer

the bulb will turn off

Answer

the bulb will glow brighter

Answer

the bulb will glow dimmer

Question 26

A student used four identical bulbs and a battery to make a circuit. He puts a box over the circuit so the connections cannot be seen.

Another student unscrews each bulb in turn and watches the effect on the other three bulbs.

Which bulb or bulbs will be the brightest?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 27

Here is a circuit diagram. All the lamps are the same.

Which ammeter will show the lowest reading?

Accepted Answer

A1

Answer

A2

Answer

A3

Answer

all ammeters will have the same reading

Question 28

Using the diagram below, what would happen to the other lamps if lamp X is broke?

Accepted Answer

the other lamps will continue to generate light

Answer

the other lamps will turn off

Answer

the other lamps will flicker

Answer

the other lamp becomes dimmer

Question 29

A circuit contains a 6 V cell and two lamps connected in series.

If both lamps are identical what will be the reading on each voltmeter?

Accepted Answer

3 V

Answer

6 V

Answer

6 A

Answer

3 A

Question 30

A student is planning how to collect some data to answer this question:

Which circuit component has the biggest resistance?

He writes down his ideas, but they are not in the right order. List the letters in order to put the statements in the right order.

Accepted Answer

A -> C -> D -> B -> E

Answer

D -> A -> C -> B -> E

Answer

C -> A -> D -> B -> E

Answer

B -> C -> D -> A -> E

Question 31

A student wire up a circuit to measure the current through a buzzer and a lamp. He connects a voltmeter to measure the voltage across the buzzer. He draws his circuit diagram.

How many things are wrong with his circuit?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 32

A bath will have ________ thermal energy than a cup of warm water at the same temperature.

Accepted Answer

more

Answer

equal amount of

Answer

less

Answer

unstable amount of

Question 33

The amount of energy that you need to raise the temperature of something does not depend only on the temperature change.

List the letters in order from the smallest to the largest amount of energy required. The energy needed to raise the temperature of:

A. 1 kg of water by 20 degrees Celsius

B. 2 kg of water by 20 degrees Celsius

C. 1 kg of water by 10 degrees Celsius

Accepted Answer

C -> A -> B

Answer

A -> C -> B

Answer

B -> A -> C

Answer

C -> B -> C

Question 34

A student puts two thermometers on the desk underneath a lamp. She covers the bulb of one thermometer with black paper (labelled A) and the other with aluminium foil (labelled B)

Which thermometer will read the higher temperature after half an hour?

Accepted Answer

A, covered with black paper

Answer

B, covered with aluminum foil

Answer

both will have the same reading

Answer

there is no change of temperature readings on both thermometer

Question 35

There is a hot drink on the table. The temperature of the hot drink could dropped significantly through heat transfer.

Explain how conduction changes the temperature of the tea.

Accepted Answer

conduction allows the heat to transfer from the drink to the cup, saucer and table.

Answer

conduction allows heat to transfer from the drink to the surrounding air

Answer

conduction allows heat to transfer away from the drink to the vacuum

Answer

conduction allows the heat to transfer within the drink itself

Question 36

If you hold a magnet near a coil of wire a voltage will be induced.

Accepted Answer

False

Answer

True

Question 37

Here is a diagram of a fossil-fuel power station.

Which letter is the generator?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 38

Here are some secondary data about solar cells from a company that sells solar cells. The table shows the are of the panels, the power produced, the energy produced per year, and the mass of carbon dioxide that would be saved because you are not burning fossil fuel.

How much carbon dioxide would you save per year if you used 25 square meter of solar panels on your roof?

Accepted Answer

300

Answer

3,750

Answer

175

Answer

3,725

Question 39

A car is at the garage waiting to be repaired. The weight of the car is 20,000 N and the area of each tyre in contact with the ground is 250 cubic centimeter.

Calculate the pressure that the car exerts on the ground.

Accepted Answer

200,000 Pa

Answer

20,000 Pa

Answer

2,000,000 Pa

Answer

800,000 Pa

Question 40

Here is a diagram of a hydraulic pump. The mechanic needs to lift the car up. He can put a car on the ram and use the handle to lift the car.

The mechanic pushes the handle down and the oil pushes the large piston up. The valves let more oil in so that he can pump the handle again.

What would happen if the pump used air instead of oil.

Accepted Answer

the force produced is less than the amount produced using oil.

Answer

the force produced is more than the amount produced using oil.

Answer

the force produced is equal than the amount produced using oil.

Answer

the force produced is neither more nor less than the amount produced using oil.

Question 41

A girl is pumping with some oil and water. She pours the oil and water into a glass and the oil floats on the water.

She cuts a cube of banana and puts it in the glass. It floats between the layer of oil and water.

What can you say about the density of the banana compared with the density of the oil and the density of the water?

Accepted Answer

The banana is denser than the oil but less dense than the water.

Answer

The banana is less than the oil but denser than the water.

Answer

The banana has equal density with oil and water.

Answer

The banana is denser than oil and water.

Question 42

A teacher is showing the class how you can make a balloon stick to the wall by rubbing it on your clothes.

As she rubs the balloon on her clothes the balloon becomes positively charged.

What has happened to make the balloon charged?

Accepted Answer

The electrons has moved from the balloon to the clothes.

Answer

The electrons has moved from the clothes to the balloons

Answer

The protons has moved from the clothes to the balloons

Answer

The protons has moved from the balloon to the clothes.

Question 43

A student has connected a parallel circuit.

The reading on ammeter A1 is 0.5 A, and the reading on ammeter A2 is 0.1 A. What is the reading on ammeter A3?

Accepted Answer

0.4 A

Answer

0.4 V

Answer

0.6 V

Answer

0.6 A

Question 44

During the day in the desert it can get very hot. Some people run marathons in the desert. There is an 'ultra-marathon' that takes place in the Sahara desert.

How does energy from the Sun reach a runner in the desert?

Accepted Answer

Radiation

Answer

Conduction

Answer

Convection

Answer

Insulation

Question 45

A farmer wants to use solar power to reduce the cost of his electricity. He buys a solar cell and puts it on his roof.

What kind of energy source is solar energy?

Accepted Answer

Renewable

Answer

Non-Renewable

Answer

Elastic Energy

Answer

Chemical Energy

S2M2 - Science 9

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science