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WorksheetsPeriodic Table
Total questions: 20
Worksheet time: 24mins
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4 AF
4 AG
4 AK
4 AKH
4 IK
How did Moseley arrange the elements in the Periodic Table of Elements?
Increase in proton number
Increase in electron number
Increase in atomic mass
Increase in atomic size
One of the advantages of classifying elements systematically in the Periodic Table of Elements is
Making it easier for the scientists to choose atoms
Knowing the number of neutrons in an element
Predicting the chemical characteristics of an element
Identfying the scientist who discovered the element
Scientist who have contributed to the classification elements in the Periodic Table are as follow except
John Newlands
Lothar Meyer
Anton Mendeleev
Henry Moseley
Whic group and period does element X belong to in Periodic Table of Element?
A = 35
Z = 17
Group 170, Period 30
Group seventeen, Period 0
Group 7, Period 3
Group 17, Period 3
In the Periodic Table of Elements, R and S are placed in the same group. If the proton number of R is 19, what is the electron arrangement of element S?
2.8.1
2.8.7
2.8.8.2
2.8.8.5
A restaurant owner uses colourful electric lights to attract his customers. What is the substance suitable for making such lights?
Argon
Infinity stone
Neon
Krypton
What is the chemical properties of the element with the electron arrangement 2.8.8.1
React vigorously with oxygen, water and chlorine gas
Does not react with any other elements
React with its own element to produce diatomic metal
React with water only
Chlorine, Cl2 reacts with sodium, Na to form a compound. What is the correct chemical equation for the reaction?
Na+Cl→NaCl
2Na +Cl2⟶ 2NaCl
NaCl→Na+Cl2
2Na + 2Cl→2NaCl
This element has two or more oxidation numbers and forms compound that have different colour. This element is
metalloid element
amphoteric element
transition element
alkaline earth metal element
Name the element that is used as a catalyst in the Ostwald Process to produce nitric acid
Nickel
Platinum
Metal
Vanadium(V) oxide
The size of atoms in Group 18 get larger down the group. This is caused by
the increase in the number of electrons
the decrease in melting point and boiling point of the elements
the increase in solubility rate in water
the increase in the number of shells filled with electrons
The reactivity of Group 17 elements decrease down the group. This is caused by
the decrease in atomic size down the group
the decrease in boiling point and melting point
the colour of element getting darker down the group
the attractive force of the nucleus on the electron getting weaker
The change in physical properties of the elements across Period 3 from left to right in the Periodic Table of Elements is due to
the increase in proton number
the increase in the radius of atoms
the decrease in electronegativity
the change in physical state from gas to liquid and finally ro solid
How does the atomic radius change when travelling across Period 3 from Na to Ar? Briefly explain your answer
(3 marks)
(a)
Which is more reactive between Sodium, Na and Potassium, K. Explain your answer. (4 marks)
- use chemical formula such as K and Na in your answer
(a)
Explain why Bromine, Br has a higher boiling point and a higher melting point than Chlorine, Cl (3 Marks)
- Use chemical formula such as Br and Cl in your answer.
(a)
Argon, Ar gas is chemically unreactive. Explain. (2 Marks)
- Use chemical formula, Ar in your answer
(a)
Choose the most mind blown/interesting Chemistry facts here. (No wrong answer here ;)
Diamond and graphite are both entirely made of carbon and nothing else. It means that you're wearing just carbon ring!
The country Argentina is named after the element silver (Ag) which is argentum in Latin
The only letter not in the periodic table is the letter J
Glass is technically neither a liquid nor a solid
