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Magnesium is an element - OCR Gateway - GCSE Chemistry - Question 16 - 2018 - Paper 1

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Magnesium is an element. It is solid at room temperature. (a) (i) Solid magnesium cannot be compressed. Why? (ii) Solid magnesium cannot flow, but liquid magnesium... show full transcript

Worked Solution & Example Answer:Magnesium is an element - OCR Gateway - GCSE Chemistry - Question 16 - 2018 - Paper 1

Step 1

Solid magnesium cannot be compressed. Why?

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Answer

Solid magnesium cannot be compressed because its particles are closely packed together in fixed positions. There are no spaces between the particles, which means they cannot be pushed closer together.

Step 2

Solid magnesium cannot flow, but liquid magnesium can flow. Explain why.

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In a solid, the particles are held in fixed positions and can only vibrate, which prevents them from flowing. However, in a liquid, the particles have more energy, allowing them to move past each other, which enables liquids to flow.

Step 3

Magnesium gas completely fills any container it is put in. Explain why.

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Magnesium gas expands to fill any container because its particles are far apart and move randomly in all directions. This allows them to occupy the entire volume of the container, regardless of its shape.

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