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F1 sc chp 5,6,7

Total questions: 59

Worksheet time: 20mins

Name
Class
Date
1.

A characteristic of matter that can only be observed when matter is changed into new substance.

a)

Chemical

b)

Physical

2.

Rusting describes matter undergoing a __________ change with gases in the air.

a)

Chemical

b)

Physical

3.

Paper is burned.

a)

Chemical

b)

Physical

4.

water

a)

Matter

b)

Non-Matter

5.

Sound

a)

Matter

b)

Non-Matter

6.

Heat

a)

Matter

b)

Non-Matter

7.

Which state of matter has particles that are closely packed?

a)

liquid

b)

gas

c)

solid

8.
Which of the following statements describes a liquid?
a)
It has a fixed shape
b)
It takes the shape of it's container
9.
Which of the following statements describes a gas?
a)
It has a fixed shape
b)
It takes the shape of it's container
10.

Which state of matter has particles that are very far apart?

a)

liquid

b)

gas

c)

solid

11.

Is air made of matter?

a)

Yes

b)

No

12.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas
13.

Movement of particles in gas is ？

a)

vibrate in fixed position

b)

move freely

c)

move freely and randomly

14.

Diffusion occurs only in solids

a)

True

b)

False

15.

How do the particles move in diffusion?

a)

From a region of low concentration to a region of high concentration

b)

From a region of high concentration to a region of low concentration

c)

From a region of low concentration to a region of low concentration

d)

From a region of high concentration to a region of high concentration

16.

The clothes hung on the clothesline is undergoing ______.

a)

Boiling

b)

Melting

c)

Evaporation

d)

Condensation

17.

dry ice will undergo the process of _________.

a)

boiling

b)

sublimation

c)

melting

d)

freezing

18.

Rate of diffusion of particles in gas is

a)

highest

b)

lowest

19.
The change from a gas to a liquid is called 
a)
condensation
b)
evaporation
c)
sublimation
d)
deposition
20.
The change from liquid to solid is called ________________.
a)
Melting
b)
Freezing
c)
Evaporation
d)
Condensation
21.
The change from solid to a gas is called ________________.
a)
Sublimation
b)
Freezing
c)
Evaporation
d)
Condensation
22.

Melting is a process that changes _____________________________.

a)

solid to liquid

b)

liquid to solid

c)

liquid to gas

d)

gas to liquid

23.
Solids melt when solid particles _____ energy, liquids freeze when liquid particles _____ energy.
a)
absorb, release
b)
release, absorb
c)
absorb, absorb
d)
release, release
24.
a)

Element

b)

Compound

25.
a)

Element

b)

Compound

26.
Which part of an atom is POSITIVELY charged?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
27.
What part of an atom is NEGATIVELY charged?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
28.

Which part of an atom has no charge?

a)

protons

b)

neutrons

c)

electrons

d)

nucleus

29.
All of these properties describe metals except...
a)
malleable
b)
conductors
c)
brittle 
d)
shiny
30.

Iron is a good conductor, malleable and magnetic. What type of element is Iron?

a)

Metal

b)

Non-metal

31.

This picture is a model of...

a)

an element

b)

a compound

c)

a homogenious mixture

d)

a heterogeneous mixture.

32.

What is gold ?

a)

element

b)

compound

c)

mixture

33.

W is ....

a)

non-metal

b)

semi-metal

c)

metal

34.

S is ....

a)

non-metal

b)

semi-metal

c)

metal

35.
A substance that is dull, brittle, and a nonconductor would be classified as a
a)
metal
b)
nonnmetal
c)
metalloid
d)
metallica
36.

Have a high melting point

a)

Metals

b)

Non-Metals

37.

Iodine, chlorine, sulphur, carbon are listed under this group

a)

metals

b)

non-metals

38.

Aluminium, iron , copper, zinc are listed under this group

a)

metal

b)

non-metal

39.

Why copper can make wire ?(2 ans )

a)

good electrical conductor

b)

poisonous

c)

rustproof

d)

bleaching agent

40.
What is electrolysis?
a)
breaking down of a compound using a current
b)
making a compound using a current
41.
Which statement correctly describes the 2 electrodes?
a)
The anode is negative and the cathode is positive
b)
The anode and cathode are both positive
c)
The anode is positive and the cathode is negative
d)
The anode and cathode are both negative.
42.
What is the name of the positive electrode?
a)
cathode
b)
anode
43.
What is the name of the negative electrode?
a)
cathode
b)
anode
44.

This technique is based on the differences of the boiling point of the substance in the mixture.

a)

decantation

b)

distillation

c)

filtration

d)

chromatography

45.

This involves using a strainer or a big screen to separate the components of solid mixtures.

a)

chromatography

b)

distillation

c)

sieving

d)

evaporation

46.

iron + oxygen = 全部小号字母

(a)  

47.

aluminum + sulphur = 全部小号字母

(a)  

48.

how to separate iron， salt and sand

a)

magnet，filtration，evaporation

b)

magnet，chromatography，evaporation

c)

magnet，evaporation，filtration

49.

What is the composition of nitrogen in the air?

a)

0.03%

b)

78%

c)

7.8%

d)

21%

50.

oxygen is used in 燃烧 (a)   .

51.

________ is used to extinguish fire.

a)

inert gas

b)

oxygen

c)

carbon dioxide

d)

nitrogen

52.

What is the composition of carbon dioxide in the air?

a)

0.03%

b)

78%

c)

7.8%

d)

21%

53.

The ozone layer is damaged by

a)

CFC

b)

dust

c)

pesticides

d)

Sulfuric and nitric acids

54.

The most common source of carbon monoxide comes from _____________________________.

a)

vehicles

b)

haze

c)

industrial sources

d)

respiration

55.

Which of the following can reduce vehicle air pollution?

(2 ans)

a)

Walk or cycle

b)

carpool

c)

Using one single car for one person

56.
The ozone layer protects us from
a)
UV rays
b)
CFCs
c)
Increased atmospheric heat
d)
Decreased atmospheric heat
57.

Which of the following releases the pollutant Chlorofluorocarbon (CFC) into the air?

a)

Air-conditioners

b)

Nuclear powerplants

c)

Construction sites

d)

Electronic factories

58.

Too much carbon dioxide in the atmosphere causes导致 __________.

(more than 1 answer)

a)

Global warming

b)

More rain

c)

Air pollution

d)

Greenhouse effect

59.

the diagram above shows the conditions for combustion. Tick 3 element needed.

a)

Oxygen

b)

Carbon dioxide

c)

Heat

d)

Fuel

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