Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Principles of Chemistry
991 practice questions
Topics covered
- States of Matter102 practice questions
- Elements, Compounds and Mixtures69 practice questions
- Atomic Structure108 practice questions
- The Periodic Table103 practice questions
- Chemical Formulae, Equations and Calculations Part 119 practice questions
- Chemical Formulae, Equations and Calculations Part 2144 practice questions
- Ionic Bonding143 practice questions
- Covalent Bonding68 practice questions
- Metallic Bonding19 practice questions
- Electrolysis198 practice questions
Practice questions
351–360 of 991
Question 351
3 marks · Normal
Answer and see the solution →The table below shows four elements, their position in the periodic table, and the formula of the oxide formed when each reacts with oxygen:
Periodic table position and oxide formulae Element Group Period Formula of oxide A 2 3 MgO B 7 2 Cl2O7 C 1 2 Na2O D 6 3 SO3 (a)[2 marks]Classify each element in the table as a metal or a non-metal based on its position in the periodic table.
(b)[1 mark]Use the character of their oxides to explain your classifications for element C and element D.
Question 352
2 marks · Hard
Answer and see the solution →Explain why all elements in Group 2 of the periodic table react in a similar way. Your answer should refer to electronic structure.
Question 353
5 marks · Hard
Answer and see the solution →The periodic table below shows four elements, X, Y, Z, and W.
Positions of elements in the periodic table and their oxide formulae. Element Group Period Formula of oxide X 1 3 XO Y 7 3 Y2O7 Z 2 2 ZO W 6 3 WO3 (a)[2 marks]Which two elements in the table are metals? Give a reason for your choice.
(b)[2 marks]Which one element forms an acidic oxide? Explain your answer.
(c)[1 mark]State one property (other than oxide character) that most metals have which non-metals do not.
Question 354
2 marks · Hard
Answer and see the solution →Give a reason why elements in Group 0 (the noble gases) do not easily form compounds. Your answer should refer to their electronic structure.
Question 355
1 mark · Easy
Answer and see the solution →State whether most metals are malleable or brittle.
Question 356
3 marks · Easy
Answer and see the solution →The table lists four elements: sodium, aluminium, sulfur and silicon.
(a)[2 marks]State whether each of these elements conducts electricity or not (at room temperature).
(b)[1 mark]Name one exception among non-metals that conducts electricity.
Question 357
2 marks · Easy
Answer and see the solution →Diamond is a form of carbon, a non-metal, but it is the best conductor of heat of all the elements. Explain why diamond is still considered a non-metal despite this property.
Question 358
3 marks · Easy
Answer and see the solution →The following table shows whether certain elements conduct electricity at room temperature:
Element Conducts electricity? Magnesium Yes Bromine No Lead Yes Iodine No (a)[1 mark]Identify which two elements in the table are non-metals.
(b)[1 mark]State what the data shows about the electrical conductivity of metals compared to non-metals.
(c)[1 mark]Give one reason why electrical wires are not made from non-metals.
Question 359
1 mark · Easy
Answer and see the solution →State whether the oxide of carbon is acidic, basic, or amphoteric.
Question 360
3 marks · Easy
Answer and see the solution →Copper is a metal and sulfur is a non-metal. Using their physical properties, answer the following:
(a)[1 mark]State the typical appearance (shiny/dull) of copper and sulfur.
(b)[1 mark]Describe whether copper and sulfur are likely to be malleable or brittle.
(c)[1 mark]Give one property of copper that makes it suitable for use in electrical wiring.