WorksheetsGroup 18 and Group 1 Elements
Total questions: 30
Worksheet time: 30mins
Which of the following elements are in Group 18 in the Periodic Table of Elements?
Helium and Krypton
Hydrogen and Oxygen
Oxygen and Krypton
Helium, Hydrogen and Oxygen
Which statements correct about noble gases?
Exists as diatomic molecules
Do not form chemical bonds
Form ions with different valencies
Combine with transition metals to form coloured compounds
Neon and argon are unreactive elements. It means
they have octet electron arrangements
they belongs to Group 18 in the Periodic Table
they are held together by Van der Waals forces of attraction
they are known as noble gases
Which of the following is a monoatom gas?
Fluorine
Helium
Oxygen
Nitrogen
Diagram 5 shows the symbols for two elements. The letters used are not the actual symbol of the elements. Which of the following is true about X and Y?
Element X is more reactive than element Y
Both element X and Y are monoatomic
Both element X and Y react with chlorine gas
Element X reacts with element Y to form a compound with the formula XY
Professionals cyclists usually fills their bicycle tyres with a gas which makes the bicycle lighter. Which of the following elements X, Y, W and Z in the Periodic Table is suitable to be used in bicycle tyres?
X
Y
W
Z
Table shows the properties of element Q. Which of the following elements is Q?
Sodium
Helium
Argon
Silver
Diagram 1 show an air balloon filled with gas X. In which group is X located in the Periodic Table?
Group 15
Group 16
Group 17
Group 18
Which of the following shows the number of protons of an element in Group 1 of the Periodic Table of Elements?
3
7
13
17
The following information is about atom Q and atom P. Which diagram shows the electron arrangement of atom Q?
Which statement explains why the size of the atoms of Group 1 elements increases when going down the group in the periodic table?
The number of proton increases
The relative atomic mass increases
The number of valence electron increases
The number of shell filled with electrons increases
Which statement explains the reactivity of Group 1 elements increases when going down the group?
The physical state of the elements changes from gas to liquid then to solid at room temperature
The attractive force between valence electron and the nucleus becomes stronger
The valence electron gets further away from the nucleus
The melting points of the elements decrease
Element Y is below potassium in the same group in the Periodic Table. Determine the formula of the product and the reactivity of Y with chlorine compared to the reaction of potassium with chlorine
YCl₂ , less reactive
YCl₂ , more reactive
YCl, less reactive
YCl, more reactive
Diagram 9 shows the symbols for elements X and Y. Which of the following is true about elements X and Y?
Element X is less reactive than element Y
Both elements X and Y are monoatomic gas
Both elements X and Y are non-metals
Element X react with element Y to form an ionic compound
Table shows the proton number of elements P and Q. Which of the following statements are true of the elements in table 2?
Q is more reactive than P
The atomic size of Q is bigger than P
Both elements P and Q can conduct electricity
P and Q are in the same group in the periodic table
All of above
Element X is below potassium in the Periodic Table. We can predict that
element X is less electropositive than potassium
the size atom X is smaller than potassium
atom of element X has more valence electrons than potassium
the elements X reacts more vigorously than potassium in oxygen
Element Z is located in the same group as potassium in the periodic table. Z is not the actual symbol of the element. Which of the following statements are chemical properties of element Z?
React with water to produce alkaline solution
React with oxygen to produce a black solid
React with chlorine gas to produce white solid
React with sodium hydroxide solution to produce an acidic solution
Which of the following is true about the products formed when sodium reacts with water?
Oxygen
Hydrogen
Sodium oxide
Sodium hydroxide
Diagram 4 show reaction lithium with water. Lithium react with water to produce solution that
turns red litmus paper blue
turns blue litmus paper red
no visible change in the colour of the blue litmus paper
no visible change in the colour of the red litmus paper
Diagram 6 shows the observation of a reaction when a piece of metal X and metal Y of the same size are put into a beaker containing cold water. Which of the following explains the observation?
Metal Y is harder than metal X
Metal Y is denser than metal X
The atom of metal Y contains more protons than the atom of metal X
The atom of metal Y releases electrons more easily than the atom of metal X
Which chemical equation represents the reaction between sodium metal and oxygen gas?
Na + O₂ ➝ NaO₂
Na + O₂ ➝ Na₂O
2Na + O₂ ➝ Na₂O
4Na + O₂ ➝ 2Na₂O
Diagram shows the reaction between sodium with oxygen gas. What is the observation for the reaction?
Sodium glows brightly
Sodium burns slowly with a red flame
Sodium burns very rapidly and brightly with a lilac flame
Sodium burns rapidly and brightly with a yellow flame
Francium atom has one valence electron. Therefore francium
conducts electricity
is an element in Group 1
reacts with water
reacts with chlorine to form FrCl compound
All of above
Diagram shows the set up of the apparatus for an experiment to study the reaction between chlorine gas and substance X. When reaction is completed, a white solid is observed. Name the substance produced.
Copper(II) chloride
Iron(II) chloride
Lithium chloride
Lithium oxide
Elements P, Q and R are in the same group in the Periodic Table of Elements. Table shows the observation for the reaction of the elements with chlorine and the formula of the chloride formed. Which of the following statements is correct?
P, Q and R are alkaline earth metals
The atomic radius increases from P to Q to R
The elements form ions with negative charge
Their reactivity decreases down the group
Which of the following metals burn with a very bright purplish flame in a gas jar filled with oxygen and produces a white residue?
Lead
Silver
Sodium
Potassium
Caesium metal is below sodium in Group 1 of Periodic Table of Elements. Which of the following statements are true about Caesium?
Caesium is denser than sodium
Caesium is more reactive than sodium
Caesium atom is bigger than sodium atom
Caesium is more electropositive than sodium
All of above
X is an element that has the properties such as soft solids, react with cold water to form alkaline solution and are stored in paraffin oil. Amongst A, B, C and D in the diagram, which elements represents X?
A
B
C
D
A car distributors wants to use colourful electric lamps to attract customers. Which of following substances A, B, C or D in the diagram is suitable for use in the lamps?
A
B
C
D
An atom of element X has three electron filled shells. When element X reacts with chlorine, it forms a compound with the formula XCl. Which of the following is element X?
(proton number Li, 3; Na, 11; Mg, 12; K, 19)
Lithium
Sodium
Magnesium
Potassium
