IGCSE Co-ordinated Science Semester 1 Revision Questions

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Questão 1 de 30

The circuit shown contains a component X and two meters Y and Z in an electrical circuit.
Which unit is used when stating the value of X, and which units are used when stating the
readings on Y and Z?

Selecione uma das seguintes:

Explicação

Questão 2 de 30

An electrically charged student produces soap bubbles. When he holds his hand near the bubbles, they move away quickly from his hand.
For this movement of the bubbles to happen, which statement is correct?

Selecione uma das seguintes:

The bubbles must be negatively charged.
The bubbles must be positively charged.
The bubbles must have the opposite charge to the charge on the student.
The bubbles must have the same charge as the charge on the student.

Explicação

Questão 3 de 30

When a liquid evaporates, molecules escape from its surface and the temperature of the
remaining liquid changes.

Which row in the table shown is correct for the escaping molecules and for the temperature change of the remaining
liquid?

Selecione uma das seguintes:

Explicação

Questão 4 de 30

The diagram shows a helium atom.
Which particles in the helium atom have approximately the same mass?

Selecione uma das seguintes:

electron and proton only
electron and neutron only
proton and neutron only
electron, proton and neutron

Explicação

Questão 5 de 30

Which diagram represents a single element?

Selecione uma das seguintes:

Explicação

Questão 6 de 30

The diagram shows the electrolysis of a dilute solution of copper( II ) chloride using inert electrodes.
Which row shows the products formed at each electrode and describes the bonding in copper( II )chloride?

Selecione uma das seguintes:

Explicação

Questão 7 de 30

An element is a solid at room temperature and does not conduct electricity.
What is the proton number of this element?

Selecione uma das seguintes:

Explicação

Questão 8 de 30

These are distance/time graphs.
Which graph shows an object moving at constant speed?

Selecione uma das seguintes:

Explicação

Questão 9 de 30

Which statement about weight is correct?

Selecione uma das seguintes:

A. Weight and mass are both measured in the same unit.
B. Weight is the amount of matter in a body and is measured in kilograms.
C. Weight is a force and is measured in kilograms.
D. Weight is a force and is measured in newtons.

Explicação

Questão 10 de 30

A student pours liquid into a measuring cylinder.
The student records the volume of the liquid from the scale on the measuring cylinder. He then puts the measuring cylinder containing the liquid on a balance and records the mass.

What else needs to be measured before the density of the liquid can be calculated?

Selecione uma das seguintes:

A. the depth of the liquid in the measuring cylinder
B. the mass of the empty measuring cylinder
C, the temperature of the liquid in the measuring cylinder
D. the volume of the empty measuring cylinder

Explicação

Questão 11 de 30

An electric motor is used to lift a container off a ship.
The output power of the motor is changed by changing the time taken to lift the container and by changing the work done in lifting the container.
Which row in the table shows changes that both increase the output power?

Selecione uma das seguintes:

Explicação

Questão 12 de 30

On a warm day, a swimmer climbs out of a swimming pool into the open air and water evaporates from his skin.
As the water evaporates, which molecules escape into the air first and what happens to the average speed of the remaining water molecules?

Selecione uma das seguintes:

Explicação

Questão 13 de 30

A sample of a solid is heated for 12 minutes and its temperature noted every minute.
The results are shown in the table.
How should the sample be described at the end of the 12 minutes?

Selecione uma das seguintes:

A. all solid
B. in the process of melting
C. all liquid
D. in the process of boiling

Explicação

Questão 14 de 30

Food is kept in a loosely-packed cool-box which uses two ice packs to keep it cool.
Where should the ice packs be placed to keep all the food as cool as possible?

Selecione uma das seguintes:

A. both at the bottom of the box
B. both at the top of the box
C. one at the front and one at the back of the box
D. one on the left and one on the right of the box

Explicação

Questão 15 de 30

A certain electrical appliance is powered from a mains supply.
The appliance normally uses a current of 3.0 A, but the current briefly rises to 4.0 A at the instant the appliance is switched on. The cable to the appliance is designed for currents up to 6.0 A.
A fuse is used to protect the circuit.

What should be the rating of the fuse?

Selecione uma das seguintes:

A. 1.0 A
B. 3.0 A
C. 5.0 A
D. 13.0 A

Explicação

Questão 16 de 30

A lamp is connected in four circuits in turn.
The batteries are identical and the resistors are identical.

In which circuit is the lamp brightest?

Selecione uma das seguintes:

Explicação

Questão 17 de 30

The table compares an atom of carbon-13 and an atom of nitrogen-14.
A neutral atom of carbon-13 and a neutral atom of nitrogen-14 have the same number of:

Selecione uma das seguintes:

A. electrons.
B. ions.
C. neutrons.
D. protons.

Explicação

Questão 18 de 30

In which substance are the particles close together and slowly moving past each other?

Selecione uma das seguintes:

A. air
B. ice
C. steam
D. water

Explicação

Questão 19 de 30

A student was provided with only a thermometer, a stopwatch and a beaker.
What could the student measure?

Selecione uma das seguintes:

A 10.5 g solid and 24.8 cm^3 liquid
B. 10.5 g solid and 25 ° C
C. 24.8 cm^3 liquid and 45 seconds
D. 25 ° C and 45 seconds

Explicação

Questão 20 de 30

Mixture 1 contains sand and water.
Mixture 2 contains salt and water.

Which method of separation could be used to obtain each of the required products from each mixture?

Selecione uma das seguintes:

Explicação

Questão 21 de 30

The diagram shows the electronic structures of atoms P and Q.
P and Q combine to form a molecule.

What is the formula of this molecule?

Selecione uma das seguintes:

A. PQ4
B. PQ
C. P2Q
D. P4Q

Explicação

Questão 22 de 30

Two isotopes of helium are Helium-3 and Helium-4.

Which two diagrams show the arrangement of particles in these two isotopes?

Selecione uma das seguintes:

Explicação

Questão 23 de 30

The first table describes the structures of four particles.

What are the correct values of X , Y and Z ?

Selecione uma das seguintes:

Explicação

Questão 24 de 30

The relative formula mass, Mr, of copper(II) sulfate, CuSO4, is 160.

Which mass of sulfur is present in 160g of copper(II) sulfate?

Selecione uma das seguintes:

A. 16g
B. 32g
C. 64g
D. 128g

Explicação

Questão 25 de 30

The diagram shows a section of an overhead power cable.

Which statement explains why a particular substance is used?

Selecione uma das seguintes:

A. Aluminium has a low density and is a good conductor of electricity.
B. Porcelain is a good conductor of electricity.
C. Steel can rust in damp air.
D. Steel is more dense than aluminium.

Explicação

Questão 26 de 30

Metals could be extracted from their molten chlorides using electrolysis.

Which substances are formed at each electrode?

Selecione uma das seguintes:

Explicação

Questão 27 de 30

Some reactions are listed below.

methane + oxygen → carbon dioxide + water
sodium + water → sodium hydroxide + hydrogen
magnesium + hydrochloric acid → magnesium chloride + hydrogen

Which word correctly describes all of these reactions?

Selecione uma das seguintes:

A. combustion
B. endothermic
C. exothermic
D. neutralisation

Explicação

Questão 28 de 30

An experiment to determine the rate of a chemical reaction could be carried out using the apparatus shown.

Which reaction is being studied?

Selecione uma das seguintes:

A. C l 2 + 2KBr → 2KC l + Br2
B. Mg + H2SO4 → MgSO4 + H2
C. NaC l + AgNO3 → NaNO3 + AgC l
D. NaOH + HC l → NaC l + H2O

Explicação

Questão 29 de 30

Which type of reaction always forms a salt and water?

Selecione uma das seguintes:

A. exothermic
B. neutralisation
C. oxidation
D. polymerisation

Explicação

Questão 30 de 30

Which property is not characteristic of a base?

Selecione uma das seguintes:

A. It reacts with a carbonate to form carbon dioxide.
B. It reacts with an acid to form a salt.
C. It reacts with an ammonium salt to form ammonia.
D. It turns universal indicator paper blue.

Explicação

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	Criado por Jeffrey Piggott mais de 9 anos atrás

Revision quiz for Semester 1 Examination

IGCSE Co-ordinated Science Semester 1 Revision Questions

Questão 1 de 30

The circuit shown contains a component X and two meters Y and Z in an electrical circuit. Which unit is used when stating the value of X, and which units are used when stating the readings on Y and Z?

Selecione uma das seguintes:

Explicação

Questão 2 de 30

An electrically charged student produces soap bubbles. When he holds his hand near the bubbles, they move away quickly from his hand. For this movement of the bubbles to happen, which statement is correct?

Selecione uma das seguintes:

Explicação

Questão 3 de 30

When a liquid evaporates, molecules escape from its surface and the temperature of the remaining liquid changes. Which row in the table shown is correct for the escaping molecules and for the temperature change of the remaining liquid?

Selecione uma das seguintes:

Explicação

Questão 4 de 30

The diagram shows a helium atom. Which particles in the helium atom have approximately the same mass?

Selecione uma das seguintes:

Explicação

Questão 5 de 30

Which diagram represents a single element?

Selecione uma das seguintes:

Explicação

Questão 6 de 30

The diagram shows the electrolysis of a dilute solution of copper( II ) chloride using inert electrodes. Which row shows the products formed at each electrode and describes the bonding in copper( II )chloride?

Selecione uma das seguintes:

Explicação

Questão 7 de 30

An element is a solid at room temperature and does not conduct electricity. What is the proton number of this element?

Selecione uma das seguintes:

Explicação

Questão 8 de 30

These are distance/time graphs. Which graph shows an object moving at constant speed?

Selecione uma das seguintes:

Explicação

Questão 9 de 30

Which statement about weight is correct?

Selecione uma das seguintes:

Explicação

Questão 10 de 30

Selecione uma das seguintes:

Explicação

Questão 11 de 30

An electric motor is used to lift a container off a ship. The output power of the motor is changed by changing the time taken to lift the container and by changing the work done in lifting the container. Which row in the table shows changes that both increase the output power?

Selecione uma das seguintes:

Explicação

Questão 12 de 30

On a warm day, a swimmer climbs out of a swimming pool into the open air and water evaporates from his skin. As the water evaporates, which molecules escape into the air first and what happens to the average speed of the remaining water molecules?

Selecione uma das seguintes:

Explicação

Questão 13 de 30

A sample of a solid is heated for 12 minutes and its temperature noted every minute. The results are shown in the table. How should the sample be described at the end of the 12 minutes?

Selecione uma das seguintes:

Explicação

Questão 14 de 30

Food is kept in a loosely-packed cool-box which uses two ice packs to keep it cool. Where should the ice packs be placed to keep all the food as cool as possible?

Selecione uma das seguintes:

Explicação

Questão 15 de 30

Selecione uma das seguintes:

Explicação

Questão 16 de 30

A lamp is connected in four circuits in turn. The batteries are identical and the resistors are identical. In which circuit is the lamp brightest?

Selecione uma das seguintes:

Explicação

Questão 17 de 30

The table compares an atom of carbon-13 and an atom of nitrogen-14. A neutral atom of carbon-13 and a neutral atom of nitrogen-14 have the same number of:

Selecione uma das seguintes:

Explicação

Questão 18 de 30

In which substance are the particles close together and slowly moving past each other?

Selecione uma das seguintes:

Explicação

Questão 19 de 30

A student was provided with only a thermometer, a stopwatch and a beaker. What could the student measure?

Selecione uma das seguintes:

Explicação

Questão 20 de 30

Mixture 1 contains sand and water. Mixture 2 contains salt and water. Which method of separation could be used to obtain each of the required products from each mixture?

Selecione uma das seguintes:

Explicação

The circuit shown contains a component X and two meters Y and Z in an electrical circuit.
Which unit is used when stating the value of X, and which units are used when stating the
readings on Y and Z?

An electrically charged student produces soap bubbles. When he holds his hand near the bubbles, they move away quickly from his hand.
For this movement of the bubbles to happen, which statement is correct?

When a liquid evaporates, molecules escape from its surface and the temperature of the
remaining liquid changes.

Which row in the table shown is correct for the escaping molecules and for the temperature change of the remaining
liquid?

The diagram shows a helium atom.
Which particles in the helium atom have approximately the same mass?

The diagram shows the electrolysis of a dilute solution of copper( II ) chloride using inert electrodes.
Which row shows the products formed at each electrode and describes the bonding in copper( II )chloride?

An element is a solid at room temperature and does not conduct electricity.
What is the proton number of this element?

These are distance/time graphs.
Which graph shows an object moving at constant speed?

An electric motor is used to lift a container off a ship.
The output power of the motor is changed by changing the time taken to lift the container and by changing the work done in lifting the container.
Which row in the table shows changes that both increase the output power?

On a warm day, a swimmer climbs out of a swimming pool into the open air and water evaporates from his skin.
As the water evaporates, which molecules escape into the air first and what happens to the average speed of the remaining water molecules?

A sample of a solid is heated for 12 minutes and its temperature noted every minute.
The results are shown in the table.
How should the sample be described at the end of the 12 minutes?

Food is kept in a loosely-packed cool-box which uses two ice packs to keep it cool.
Where should the ice packs be placed to keep all the food as cool as possible?

A lamp is connected in four circuits in turn.
The batteries are identical and the resistors are identical.

In which circuit is the lamp brightest?

The table compares an atom of carbon-13 and an atom of nitrogen-14.
A neutral atom of carbon-13 and a neutral atom of nitrogen-14 have the same number of:

A student was provided with only a thermometer, a stopwatch and a beaker.
What could the student measure?

Mixture 1 contains sand and water.
Mixture 2 contains salt and water.

Which method of separation could be used to obtain each of the required products from each mixture?

The diagram shows the electronic structures of atoms P and Q.
P and Q combine to form a molecule.

What is the formula of this molecule?

Two isotopes of helium are Helium-3 and Helium-4.

Which two diagrams show the arrangement of particles in these two isotopes?

The first table describes the structures of four particles.

What are the correct values of X , Y and Z ?

The relative formula mass, Mr, of copper(II) sulfate, CuSO4, is 160.

Which mass of sulfur is present in 160g of copper(II) sulfate?

The diagram shows a section of an overhead power cable.

Which statement explains why a particular substance is used?

Metals could be extracted from their molten chlorides using electrolysis.

Which substances are formed at each electrode?

Some reactions are listed below.

methane + oxygen → carbon dioxide + water
sodium + water → sodium hydroxide + hydrogen
magnesium + hydrochloric acid → magnesium chloride + hydrogen

Which word correctly describes all of these reactions?

An experiment to determine the rate of a chemical reaction could be carried out using the apparatus shown.

Which reaction is being studied?