Quiz Chapter 2 Form 4 @mohdnorihwan.blogspot.com

8/3/2019 Quiz Chapter 2 Form 4 @mohdnorihwan.blogspot.com

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Arah Pendidikan Sdn Bhd 1 Chemistry SPM

Chapter 2 The Structure of the Atom

Paper 1

Answer all the questions.

1 SubstanceXis a liquid at room temperature. It rapidly evaporates if left exposed to the airat room temperature. Which of the following represents the melting point and boiling point

of substanceX?

Melting point /oC Boiling point /

oC

A -120 -39

B -5 109

C -7 58

D -45 280

2 Which of the following is an example of diffusion?

A Steam condensing on a cold window

B Hot air rising above a burning candleC The spreading of the fragrance of perfumes

D Burning of cooking gas

3 Deuterium (symbol D) is an isotope of hydrogen. Which formula is incorrect for a

deuterium compound?

A CD4

B D2O

C ND4

D DCI

4 The diagrams show the arrangement of particles in substance Yat a pressure of 1atmosphere with different temperatures.

Which of the following could the diagrams represent the melting and boiling point of

substance Y?

Melting point / C Boiling point / C A -183 120

B 119 444

C -117 87

D 80 1413

5 Which of the following provides the best evidence that matter consists of tiny particles that

move randomly?

A Electrical conductivity of metals

B Air can be compressed easily

C A tiny oil droplet forms a thin layer when it is placed on water

D If a bottle of ammonia is opened, the pungent smell of the gas is quickly detected in thewhole laboratory

at 50oC at 500

oC


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6 The three isotopes of hydrogen are : H, H and H. The heaviest isotope of hydrogen

contains

A three neutrons

B one electron

C three protons

D one fewer proton than an atom of the lightest isotope

7 Which of following is used forfilling light bulbs?

A Argon

B Neon

C Hydrogen

D Oxygen

8 The boiling points of some elements are given in the table below.

Element Boiling Point/C

Nitrogen 196Xenon 108

A mixture of nitrogen and xenon at 200 C is allowed to warm up gradually. Which of the

substances will still be in the liquid state at 150 C?

A Nitrogen

B Nitrogen and xenon

C Xenon

D Nitrogen and xenon both become gases

9 U and U at are two naturally occurring isotopes of uranium. Which of the following

statement is true about these isotopes?.I A U atom has the same number of neutrons as a U atom.

II A U atom has the same number of electrons as a U atom.

III A U atom has the same number of protons as a U atom.

IV A U atom has the same atomic mass as a U atom.

A I and IV only

B II and III only

C I, II and III only

D I, II, III and IV

10 Isotopes are different atoms with the same number of

A neutrons

B electrons but different numbers of protons

C neutrons but different number of electrons and protons

D protons but different number of neutrons

238

92

23592

23592

23592

23592

23592

23892

23892

23892

23892

2

1

1

1

3

1


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11 What is the number of protons, neutrons and electrons of a sulphur atom,3216

S?

Number of Number of Number of

protons neutrons electrons

A 16 16 16

B 16 16 32

C 32 16 16 D 16 32 16

12 Which pair of atoms has the same number of neutrons?

A N and P

B Na and Mg

C C and Si

D U and U

13

The figure shows the structure of an atom. Which statement is correct about this atom?

A Its nucleon number is 13

B Its proton number is 8

C It has 4 valence electrons

D The electron arrangement of the atom is 2.2

14 The following information is about a substance, bromine.

Melting point: 2 C

Boiling point: 59 C

If bromine is cooled, at which temperature will it exists in liquid form?

I 30 C

II 30 C

III 50 C

IV 60 C

A I only

B I and II only

C II and III only

D III and IV only

147

31

15

2311

2412

126

2814

23592

23892

++

++

+

= neutron

= proton

= electron


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Questions 15 - 18 are based on the figure below.

15

The figure shows a portion of cooling curve of a liquid substance,X.

Melting occurs at the stage of

A P Q

B Q R

C R S

D S T

16 At which stage doesXexist as liquid and solid?

A P Q

B Q R

C R S

D S T

17 At which point doesXstarted to freeze?

A P

B Q

C T

D S

18 At which points are particles ofXarranged orderly and closely?

I P

II Q

III S

IV T

A I and II only

B II and III only

C III and IV only

D II,III and IV only

19 Which of the following subatomic particles are not found in a hydrogen atom, H?

A Electron

B Proton

C Neutron

D Nucleus

20 An atom of argon has 18 electrons, 18 protons and 22 neutrons. What is the proton

number and the nucleon number of argon?

Proton number Nucleon number

A 18 22

B 22 18 C 18 40

D 40 18

Temperature(oC) P

Q

R

S

T

Time (minute)

1

1

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Quiz Chapter 2 Form 4 @mohdnorihwan.blogspot.com