This question is about metals and non-metals - AQA - GCSE Chemistry - Question 1 - 2022 - Paper 1
Question 1
This question is about metals and non-metals.
Figure 1 shows an outline of part of the periodic table.
Figure 1
Element Q is a dull solid with a melting point of ... show full transcript
Worked Solution & Example Answer:This question is about metals and non-metals - AQA - GCSE Chemistry - Question 1 - 2022 - Paper 1
Step 1
Element Q is a dull solid with a melting point of 44 °C. Which section of the periodic table in Figure 1 is most likely to contain element Q?
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Answer
Element Q is likely a non-metal due to its low melting point and inability to conduct electricity. Therefore, the correct answer is section D.
Step 2
Element R forms ions of formula R²⁺ and R³⁺. Which section of the periodic table in Figure 1 is most likely to contain element R?
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Answer
Element R is likely a transition metal, as these elements commonly form ions with different charges. Thus, the correct answer is section B.
Step 3
Give two differences between the physical properties of the elements in Group 1 and those of the transition elements.
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Answer
Group 1 elements generally have lower melting and boiling points compared to transition elements.
Transition elements are usually denser and stronger than Group 1 elements.
Step 4
Complete Figure 2 to show the electronic structure of an aluminium atom.
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Answer
The electronic structure of an aluminium atom can be represented as follows:
There are 3 electrons in the outer shell; therefore, it should be depicted with 2 electrons in the first shell and 8 electrons in the second shell, followed by 3 in the third shell.
Step 5
Describe how metals conduct electricity.
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Answer
Metals conduct electricity due to the presence of delocalised electrons. These electrons can move freely throughout the metal structure, allowing them to carry electrical charge.
Step 6
Name the type of bonding in compounds formed between metals and non-metals.
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Answer
The type of bonding in compounds formed between metals and non-metals is ionic bonding.
Step 7
Describe what happens when a magnesium atom reacts with an oxygen atom.
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Answer
When a magnesium atom reacts with an oxygen atom, the magnesium atom loses two electrons to form a Mg²⁺ ion, while the oxygen atom gains those two electrons to form an O²⁻ ion. This transfer of electrons leads to the formation of ionic bonds, resulting in magnesium oxide.
