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Term 3 recap

Total questions: 66

Worksheet time: 1hrs 7mins

Name
Class
Date
1.

Which of these things are NOT attracted to a magnet?

a)

paper clip

b)

nail

c)

rubber band

d)

scissors

2.

When "like" poles meet, they ______________.

a)

Attract

b)

Pull

c)

Repel

d)

Melt

3.

What is the space around a magnet where the force is?

a)

Magnetic pole

b)

Magnetic field

c)

Magnetic needle

4.

When two magnets "click together", that means ...

a)

magnets are magical.

b)

opposite poles were near

c)

they had glue on them.

5.

When the north and south poles meet, they will __________ each other.

a)

push

b)

attract

c)

freeze

6.

Which one is magnetic?

a)

sand

b)

plastic

c)

iron

d)

wood

7.

The 2 ends of a magnet are called _________.

a)

bars

b)

ends

c)

poles

8.

Because of Earth's magnetic field, which way will the North side of the arrow on a compass always point towards?

a)

East

b)

North

c)

South

d)

West

9.

What is an example of a permanent magnet?

a)

Paperclip

b)

Iron

c)

Refrigerator magnet

d)

a nail

10.

Magnetism is a type of what?

a)

gravity

b)

relationship

c)

chemical element

d)

force

11.

What is a temporary magnet?

a)

a magnet that lasts forever

b)

a magnet with a strong force

c)

material that has been magnetized but cannot hold its magnetism for long

d)

any magnet that attracts metals

12.

In which part of a magnet is the magnetic force strongest?

a)

In the Center

b)

At the Poles

c)

In the middle

d)

At the North Pole only

13.

What do you call the group of objects that are attracted to magnets?

a)

Non-Magnetic Objects

b)

Metallic Objects

c)

Transparent Objects

d)

Magnetic Objects

14.

9. Which is an example of a natural magnet?

a)

Disc magnet

b)

U shape magnet

c)

Ring magnet

d)

Lodestone

15.

How is magnet used in the picture?

a)

hold objects

b)

show direction

c)

produces movements

d)

lift heavy objects

16.

A magnet is placed near a group of steel and plastic paper clips. The magnet will_________.

a)

attract both steel and plastic paper clips

b)

attract only the plastic paper clips

c)

attract only the steel paper clips

d)

repel the plastic paper clips

17.
What is an electromagnet?
a)
a temporary magnet made from current carrying wire around a magnetic metal core.
b)
a permanent magnet with a north and south pole
18.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
19.
Which of the following is NOT part of an electromagnet?
a)
Wire
b)
Iron
c)
Toothpick
d)
Power source
20.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
21.
Surrounding every magnet is a __________  __________.
a)
magnetic field
b)
electrical current
c)
another magnet
22.
While electric current is flowing through a wire, what surrounds the wire?
a)
a magnetic field
b)
a glowing light
c)
neutrons
d)
protons
23.
What would increase the strength of an electromagnet?
a)
Increasing the amount of current flowing through the wire.
b)
Inserting a wooden core inside the coil
c)
Changing the direction of the current
d)
Decreasing the number of coils of wire
24.
What is the metal center of an electromagnet called?
a)
The current
b)
The wire
c)
The coil
d)
The ferromagnetic core
25.

Magnets on refrigerator cannot be turned off. Which type of magnets they belong?

a)

electromagnets

b)

battery

c)

permanent magnets

d)

copper wire

26.

What type of magnet that can turned on and off?

a)

electromagnet

b)

permanent magnet

c)

electricity

d)

battery

27.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
28.
What is most likely to happen when the switch is closed?
a)
A magnetic field should be produced
b)
The nail will rust
c)
The battery will explode
d)
The wire will catch on fire
29.
As the distance between two magnets increases (they get farther apart), the force between them:
a)
Increases
b)
Decreases
c)
Stays the Same
30.
If the North Pole of a permanent magnet is placed next to a compass as seen in the picture, which direction will the needle move?
a)
Clockwise
b)
Counter-clockwise
c)
It will not move
d)
Need more information
31.
Magnets that are arranged like this will _______. 
a)
move away from each other (repel)
b)
move towards each other (attract)
32.

Diagram 4 shows the graph of volume of carbon dioxide gas against time when 5 g of marble chips is added to

50 cm3 of 0.2 mol dm-3 hydrochloric acid.


At what time the rate of reaction the highest?

a)

t1

b)

t2

c)

t3

d)

t4

33.

Diagram 7 shows a graph of the volume of gas produced against time for the reaction between zinc granules and hydrochloric acid.


The gradient of the graph decreases with time because

a)

catalyst is not used

b)

volume of mixture decreases

c)

temperature of reaction decreases

d)

concentration of hydrochloric acid decreases

34.

List four factors that affects the rate of a reaction

a)

temperature

b)

concentration

c)

surface area

d)

volume

e)

catalysts

35.

A temperature increase causes the particles ......

a)

to slow down

b)

move faster

c)

collide higher

d)

in the right order

36.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

37.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
38.

The ______________is required to break the bonds of the reactants.

a)

Carbonic energy

b)

Activation energy

c)

Plutonic energy

d)

Energi Gaib

39.
What makes an effective collision?
a)
When molecules collide.
b)
When molecules collide with the proper orientation.
c)
When molecules collide with proper orientation and enough kinetic energy.
d)
High Temperature.
40.
Why don't all collisions between particles cause a reaction?
a)
the particles also need to collide with a catalyst
b)
not all the particles collide with enough energy
c)
not all the particles collide at a high enough temperature
d)
the particles need to collide with each other twice
41.
What is the rate of reaction?
a)
How fast a reaction is 
b)
How big a reaction is
c)
How loud a reaction is
d)
How much gas a reaction produces
42.

Which unit is correct for the rate of reaction?

a)

g mol-1

b)

g min-1

c)

mol dm-3

d)

kJ mol-1

43.

Diagram shows the apparatus set up for an experiment to determine the rate of reaction.

Which of the following techniques is the most suitable to determine the rate of reaction?

a)

Record the time as soon as precipitate is formed

b)

Record the time taken to obtain the maximum temperature

c)

Record the times as soon as the cross mark cannot be seen

d)

Record the times taken for the change of the pH value until a fixed pH value is obtained

44.

Diagram shows a graph to study the effect of total surface area on the rate of reaction.

What is represented by gradient tangent X?

a)

Average rate of reaction in the first 2 minutes

b)

Average rate of reaction in the 2nd minute

c)

Overall average rate of reaction

d)

Rate of reaction at the 2nd minute

45.

Diagram shows a graph to study the effect of total surface area on the rate of reaction.

What is represented by gradient tangent X?

a)

Average rate of reaction in the first 2 minutes

b)

Average rate of reaction in the 2nd minute

c)

Overall average rate of reaction

d)

Rate of reaction at the 2nd minute

46.
The rate of a chemical reaction is NOT affected by which of the following:
a)
temperature
b)
concentration
c)
particle size (surface area)
d)
All of these affect reaction rates
47.

Icing sugar has a greater ______ _____ than a solid cube of

sugar.

a)

Surface Area

b)

Catalyst

c)

Temperature

48.
Why does breaking up a solid reactant increase the rate of reaction?
a)
it creates more solid
b)
it creates more energy
c)
it increases the surface area
d)
it increases the concentration
49.

Objects hitting each other

a)

Collision

b)

Catalyst

c)

Explosion

d)

Reaction

50.

How is this equipment being used to measure the rate of reaction?

a)

The gas syringe measures how much gas is produced in a certain time

b)

The reaction mixture will increase in volume in a certain time

51.

The amount of something; how many particles in a volume of a mixture

a)

Rate

b)

Collision

c)

Catalyst

d)

Concentration

52.

1. ___________ are the smallest unit of an element that maintains the properties of that element.

a)

Atoms

b)

Elements

c)

Compounds

d)

mixtures

53.

3. A/an _____________ contains a variety of elements and compounds that are not chemically combined with each other.

a)

atom

b)

element

c)

compound

d)

mixture

54.

2. A/An _______________ is made up of one or more of the same kind of atom chemically combined.

a)

atom

b)

element

c)

compound

d)

molecule

55.

5. True or False: elements and compounds are pure substances.

a)

True

b)

False

56.

Does this show an element, a mixture or a compound?

a)

Compound

b)

Mixture

c)

Element

57.

Is water an element, compound or mixture?

a)

Element

b)

Compound

c)

Mixture

58.

Is air an element, compound or mixture?

a)

Element

b)

Compound

c)

Mixture

59.

What name is given to a substance that contains two types of atom that are not chemically joined together?

a)

Element

b)

Compound

c)

Mixture

60.

What process allows you to smell freshly baked bread in a supermarket, even when you are far from the bakery aisle?

a)

Evaporation

b)

Diffusion

c)

Chromatography

61.

To separate a mixture of salt and water what separation tool/method is used?

a)

Filter

b)

Sieve

c)

Magnet

d)

Evaporation

62.

What is a formulation?

a)

A mixture of two or more different substances

b)

A pure substance

c)

A mixture of metals

d)

A mixture made up of set proportions

63.

Which of the following are formulations?

a)

Medicines

b)

Air

c)

Pure iron

64.

Does the amount of each substance in the formulation need to be equal?

a)

Yes

b)

No

65.

Does the proportion of each substance need to be the same each time the formulation is made?

a)

Yes

b)

No

66.

If you want to make double the amount of formulation what do you need to do?

a)

Double the amount of each substance.

b)

Double the amount of the most important substances.

c)

Half the amount of each substance.

d)

Use the same amount of each substance.

Submit

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