Learning objective
Explain evaporation as particles escaping from the surface of a liquid.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
5
Flashcards
7
Questions
Topic
Changes of state and the particle model
Subtopic
Changes of state
Study support
Understand this objective
Short explanation
Explain evaporation as particles escaping from the surface of a liquid. Cause lens: Name the cause, then state the effect on particles, pressure, density, or energy. In Changes of state, this means changes of state are explained by particle energy and arrangement. The answer should use the approved wording from Changes of state and the particle model, include liquid, evaporation, and avoid drifting into another section of Particle model of matter. For revision, practise saying the exact objective aloud, then add the one calculation, particle movement, collision, graph, or practical detail that makes the statement true. A strong exam response for checkpoint 21 is specific to explain evaporation as particles escaping from the surface of a liquid and does not reuse a generic explanation from a neighbouring objective.
Key concepts
Why it matters
This objective helps connect Changes of state to exam-style questions, flashcards, and revision notes for Changes of state and the particle model.
Common mistakes
1 linked- Evaporation Misunderstanding: Emphasize that evaporation occurs when particles at the surface gain enough energy to escape into the air, regardless of the temperature of the liquid.
Revision tools
Choose how to practise
Flashcards5 linked cards
Flashcard 1 of 5
Practice Questions7 linked questions
Question 1 of 7
Choose an answer, get feedback, then move sideways through the set.
Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- Define density as mass per unit volume.
Density of materials
- Recall and apply the equation density = mass divided by volume.
Density of materials
- Identify density in kilograms per metre cubed or grams per centimetre cubed, mass in kilograms or grams and volume in metres cubed or centimetres cubed.
Density of materials
- Calculate density when mass and volume are known.
Density of materials
- Calculate mass when density and volume are known.
Density of materials
