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The particle model

Question 10

Using the particle model, the molecules of a liquid are packed closely together so that they are touching, while the molecules of its vapour are widely separated. For a substance $X$ , the density of its liquid phase is 8.0 × 10³ times greater than the density of its vapour phase.

By modelling each molecule as occupying a cubic volume of space of side length $L$ (representing the average molecular separation), calculate the ratio:

\frac{L_{\text{vapour}}}{L_{\text{liquid}}}

$8.0 \times 10^3$

$89$

$20$

$2.7 \times 10^3$

Markscheme

The particle model Questions

GCSE
Chemistry
The particle model

27 exam-style questions on OCR GCSE Chemistry 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 10

By modelling each molecule as occupying a cubic volume of space of side length $L$ (representing the average molecular separation), calculate the ratio:

\frac{L_{\text{vapour}}}{L_{\text{liquid}}}

$8.0 \times 10^3$

$89$

$20$

$2.7 \times 10^3$

Markscheme

The particle model Questions

GCSE
Chemistry
The particle model

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