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... 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 does not conduct electricity.
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Answer
The section of the periodic table in Figure 1 likely to contain element Q is D. This section typically represents non-metals, which usually have lower melting points and are insulators.
Step 2
Element R forms ions of formula R²⁺ and R³⁺
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Answer
The section of the periodic table in Figure 1 most likely to contain element R is B. This area generally includes metals that can form multiple ionic charges.
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 have lower melting and boiling points compared to transition elements.
Transition elements are generally denser and stronger than Group 1 elements.
Step 4
Describe how metals conduct electricity.
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Answer
Metals conduct electricity due to the presence of delocalised electrons. These electrons move freely throughout the metallic structure, allowing for the flow of electric current.
Step 5
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 6
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 Mg²⁺ ions, while the oxygen atom gains those two electrons to form O²⁻ ions. This transfer of electrons leads to the formation of ionic bonds, resulting in the compound magnesium oxide (MgO).
