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The particle model

Question 1

Using a simple particle model, the molecules of a substance in its liquid phase are assumed to be closely packed together. For a particular organic solvent, its liquid density is 1200 kg m^-3 and its vaporized gas density under operating conditions is 1.2 kg m^-3.

What is the approximate ratio of the average separation of molecules in the gas phase to the average separation of molecules in the liquid phase?

\frac{\text{average separation in gas}}{\text{average separation in liquid}}

$1000$

$32$

$10$

$3.0$

Markscheme

The particle model Questions

GCSE
Physics
The particle model

29 exam-style questions on OCR GCSE Physics The particle model. Each one has a worked solution and a mark scheme showing where the marks go.

The particle model

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The particle model

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Question 1

What is the approximate ratio of the average separation of molecules in the gas phase to the average separation of molecules in the liquid phase?

\frac{\text{average separation in gas}}{\text{average separation in liquid}}

$1000$

$32$

$10$

$3.0$

Markscheme

The particle model Questions

GCSE
Physics
The particle model

29 exam-style questions on OCR GCSE Physics The particle model. Each one has a worked solution and a mark scheme showing where the marks go.