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.
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Answer
Section D is most likely to contain element Q, as it represents the non-metals typically having lower melting points and being dull.
Step 2
Element R forms ions of formula R²⁺ and R³⁺.
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Answer
Section B is most likely to contain element R, as it is indicative of transition metals which typically form multiple ions.
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 which generally have higher melting points.
Group 1 elements are softer and less dense than transition elements which are usually harder and denser.
Step 4
Complete Figure 2 to show the electronic structure of an aluminium atom.
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The electronic structure of an aluminium atom is represented as:
•
• •
• • •
• • • • •
with 3 electrons in the outer shell.
Step 5
Describe how metals conduct electricity.
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Metals conduct electricity due to the presence of delocalised electrons, which are free to move throughout the metal lattice, allowing electric current to flow.
Step 6
Name the type of bonding in compounds formed between metals and non-metals.
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The type of bonding is ionic.
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, a magnesium atom loses two electrons to form Mg²⁺ ions, while an oxygen atom gains two electrons to form O²⁻ ions, resulting in a stable ionic compound.
