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In Course: GCSE Physics (AQA): Paper 1

AQA GCSE Physics: Density and Changes of State

Covers the particle model of matter for solids, liquids, and gases. Introduces the concept of density and its calculation. Describes the six changes of state (melting, freezing, boiling, condensing, evaporating, sublimating) and explains them using the particle model.

A dramatic close-up photograph of a large, clear block of ice rapidly melting into a pool of water, with tendrils of steam visibly rising from the surface. Warm, intense backlighting creates strong contrasts and highlights, composed for a 3:2 landscape frame.

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Deck Contents

38 Cards
Lesson#1
In this deck, we'll explore the particle model of matter, which helps us understand the properties of solids, liquids and gases. We'll also define and calculate density, and look at what happens to particles during changes of state like melting and boiling.
Lesson#2
Everything is made of tiny particles. The way these particles are arranged and how they move determines whether a substance is a solid, a liquid, or a gas. This is known as the particle model.
Lesson#3
In a solid, the particles are arranged in a fixed, regular pattern. They are packed very close together and are held in place by strong forces of attraction. Because of this, they can't move from place to place, but they do vibrate on the spot.
Quiz#4
In the particle model, what are the three states of matter?

solid, liquid, and gas

Quiz#5
In a solid, how are the particles arranged?

in a regular pattern

Quiz#6
What type of motion do particles in a solid have?

vibrate on the spot

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