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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?
Answer
Element Q is likely to be a non-metal due to its low melting point and lack of electrical conductivity. Therefore, the correct section to select is D.
Step 2
Step 3
Give two differences between the physical properties of the elements in Group 1 and those of the transition elements.
Answer
- Elements in Group 1 have lower melting and boiling points compared to transition elements, which typically have higher melting points.
- Group 1 elements are less dense and softer than transition elements, which are generally denser and harder.
Step 4
Step 5
Describe how metals conduct electricity. Answer in terms of electrons.
Answer
Metals conduct electricity due to the presence of delocalised electrons that are free to move throughout the metallic structure. These electrons carry an electrical charge, allowing metals to conduct electricity efficiently.
Step 6
Step 7
Describe what happens when a magnesium atom reacts with an oxygen atom.
Answer
When a magnesium atom reacts with an oxygen atom, the magnesium atom loses two electrons, becoming a magnesium ion (Mg²⁺). The oxygen atom gains those two electrons, forming an oxide ion (O²⁻). This transfer of electrons results in the formation of magnesium oxide, where both ions achieve a full outer electron shell.