Free Printable Chemistry KSSM Form 4

Worksheets

Chemistry KSSM Form 4

Total questions: 37

Worksheet time: 38mins

Name

Class

Date

_______ is an isotope used to detect leakage in underground gas or oil pipelines.

Sodium-24

Cobalt-60

Carbon-14

Iodine-131

The following is caused by hydrogen bonds EXCEPT...

Iceberg floating on the surface of the sea

Metals can conduct electricity while non-metals cannot

Sticky damp hair strand

The extraordinary high boiling point of water compared to methane

Which of the following salts CANNOT be produced using acid-base titration method?

Sodium chloride

Copper (II) nitrate

Ammonium sulphate

Potassium carbonate

Choose the correct reagents to test the presence of chloride anion, Cl^-

Barium chloride, BaCl₂

Iron (II) sulphate, Fe₂SO₄

Silver nitrate, AgNO₃

Nitric acid, HNO₃

Which cation produces a yellow precipitate when reacted against potassium iodide, KI?

Cu²⁺

Pb²⁺

Fe²⁺

Zn²⁺

The method in the diagram can be used to determine empirical formula for..

magnesium & lead

copper & calcium

copper & aluminium

lead & zinc

Which cation produces a yellow precipitate when reacted against potassium iodide, KI?

Cu²⁺

Pb²⁺

Fe²⁺

Zn²⁺

Which of the following is a pungent gas that reacts with ammonia, NH₃ to produce a white fume?

Chlorine, Cl₂

Hydrogen chloride, HCl

Nitrogen dioxide, NO₂

Sulphur dioxide, SO₂

When descending Group 17 from fluorine to astatine,

I. the atomic size decreases

II. the melting and boiling points decrease

III. the density of the halogens increases

IV. their physical state changes from gas to liquid to solid

I and II

I and III

II and IV

III and IV

10.

Astatine would form 2 acids, HAt and HOAt, when added to water. Why is the reaction very slow compared to other halogens?

Its valence shell is the furthest away from the nucleus

It has one valence electron in its outermost shell

Its atomic radius is smaller than the others

Its melting point is higher than the others

11.

Which of the following steps are carried out after the data collection?

I Making observation

II Making conclusion

III Making hypothesis

IV Writing report

I and III

I and IV

II and III

II and IV

12.

What is the emperical formula for this oxide?

J₂O

J₂O₃

J₃O₂

13.

Which of the following statements explain why the melting point and boiling point of Group 1 element decreases when going down the group in the periodic table?

The number of proton increase.

Size of atom increases.

The relative mass of atom increases.

The number of valence electron increases.

14.

The electron arrangement of atom J is 2.8.2 and the electron arrangement of atom L is 2.7. Element J and L react to form a compound. Which of the following is true about the reaction?

Atom L donates 7 electrons

Atom J receive 1 electron

An ionic compound is formed

The ionic compound formed has the chemical formula J₂L.

15.

Which of the following is the pH value of the sulphuric acid with the concentration of 0.1 mol dm^-3?

0.1

0.2

0.7

1.0

16.

20.0cm³ of 0.4 mol dm^-3 sodium hydroxide is titrated with sulphuric acid. What is the volume of 1.0 mol dm^-3 sulphuric acid needed to neutralise the sodium hydroxide solution?

4.0cm³

8.0cm³

10.0cm³

12.0cm³

17.

Which of the following ions form a white precipitate that dissolves in excess sodium hydroxide solution?

I Pb²⁺

II Fe²⁺

III Zn²⁺

IV Mg²⁺

I and III

II and III

I, II and IV

I, III and IV

18.

The presence of sulphate ion, SO₄^2- in a solution can be identified by

adding dilute acid and bubbling the gas through limewater

adding nitric acid followed by silver nitrate solution

adding dilute sulphuric acid followed by iron (II)sulphate and concentrated sulphuric acid solution

adding hydrochloric acid followed by barium chloride solution

19.

Element R is located in the same group as lithium in the Periodic Table of Element. Which of the following are the properties of R?

Diatomic particle

Reacts vigorously with water

Cannot conduct electricity

High melting and boiling points

20.

An atom of element T has an electron arrangement of 2.8.8.1. An atom of element W has 4 neutrons and relative atomic mass of 7. Which of the following statements is true about elements T and W?

Element W is more reactive than element T.

Melting point of element W is lower than element T.

Reaction of element W with water is less vigorous than that of element T.

Density of element W is higher than that of element T.

21.

Which property is similar for chlorine, bromine, iodine and astatine in Group 17 of the Periodic Table?

I Reacts with water to form an acidic solution.

II Reacts with sodium hydroxide solution to form two salts.

III Exist as solid at room temperature.

IV All are good bleaching agents.

I and II

I and III

II and IV

III and IV

22.

The diagram above shows the cooling curve of naphthalene.

Which of the following statements are correct about the process that occurs at point Q?

I The kinetic energy of the molecules decreases.

II Naphthalene is in the liquid state.

III Naphthelene loses heat to the environment.

IV Naphthalene has completely solidified.

I and II

I and III

II and IV

III and IV

23.

What are the characteristics of isotopes of the same elements?

I Have different chemical properties

II have different physical properties

III Have same physical properties

IV Have the same electron arrangement

I and II

I and III

II and IV

III and IV

24.

The following chemical equation represents the reaction between iron and chlorine.

What is the mass of the product if 1.12 g of iron burns completely in chlorine?

(Relative atomic mass: Cl = 35.5, Fe = 56)

0.38 g

3.25 g

4.88 g

6.50 g

25.

The following chemical equation shows the decomposition of lead (II) nitrate.

What is the mass of lead (II) nitrate needed to produce $3.6\ dm^3$ of oxygen gas at room condition?

(Relative atomic mass: Pb = 207, N = 14, O = 16)
(Molar volume =

24\ dm^{3\ }mol^{-1}

)

74.48 g

99.30 g

148.95 g

198.60 g

26.

Table below shows three atoms of the elements and their electron arrangement respectively.

Which of the following is correct about the three elements according to the sequence of P, Q and R?

The atomic radius increases

The metallic properties increases

The electronegativity decreases

The melting point increases

27.

The table above shows the proton number and the relative atomic mass of sodium, Na and argon, Ar which are placed in Period 3 in the Periodic Table of Elements.

What does the size of the atoms decrease from sodium to argon in the period?

The forces of attraction between nucleus and electrons in the shells increases.

The number of valence eletrons increases.

The electronegatiivity of the elements increases.

The properties of elements change from metallic to non-metallic.

28.

What are the products if magnesium reacts with hydrochloric acid?

Magnesium chloride + Hydrogen

Magnesium sulfate + Hydrogen

Magnesium oxide + Hydrogen

Magnesium sulfide + Hydrogen

29.

Which of the following salts is prepared by precipitation method?

sodium chloride

barium sulfate

calcium nitrate

ammonium carbonate

30.

Which of the following can be prepared by titration?

Magnesium sulfate

Zinc carbonate

Lead (II) sulfate

Lithium chloride

31.

Which of the following is insoluble salt

Ammonium carbonate

Magnesium sulphate

Lead(ll) chloride

Zinc nitrate

32.

When hot this substance in yellow colour. But when cold it turns to white colour. This is

Lead(ll) oxide

Zinc oxide

Iron(lll) oxide

Iron(ll) oxide

33.

Which of the following salts powder is white colour.

Ammonium nitrate

Iron(lll) chloride

Iron(ll) nitrate

Lead(ll) oxide

34.

What is the basis of hydrogen bond?

Attraction forces between hydrogen atom bonded with another hydrogen atom

Attraction forces between hydrogen atom bonded with a high electronegativity atom (F, O, N)

Attraction forces between hydrogen atom bonded with a high electronegativity atom (F, O, N) with atom (F, O, N) of another molecule

Attraction forces between hydrogen atom with another hydrogen atom of another molecule

35.

Why can compounds that can form hydrogen bonds have higher boiling points than compounds that cannot form hydrogen bonds?

Compounds that can form hydrogen bonds need to overcome weak Van der Waals attraction forces

Compounds that can form hydrogen bonds need to overcome strong hydrogen bonds

Compounds that can form hydrogen bonds need to overcome weak Van der Waals attraction forces and strong hydrogen bonds

36.

What is the meaning of Dative Bond?

a covalent bond between two atoms where one of the atoms provides both electrons that form the bond.

a covalent bond between two atoms where both of the atoms provides both electrons that form the bond.

same with an ionic bond

not exist

37.

Why do metals conduct electricity?

They are shiny

The electrons are held tightly within the lattice

The electrons are delocalised and able to move

The electrons are shared between two metal ions

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Chemistry KSSM Form 4

Total questions: 37

Worksheet time: 38mins

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