All of AQA Particle Model Explained - GCSE Physics 9-1 REVISION

This video is a summary of all of AQA particle model of matter, explained for GCSE Physics 9-1. You can use this as an AQA particle model of matter revision tool.

The density of an object is equal to its mass per unit volume, ρ = m/V. An object which is more dense will have a greater mass for the same volume.

The particles in solids and liquids are closely packed but the bonds between particles in a liquid allow them to move freely past each other. Particles in a gas are much more spread out.

A solid melts into a liquid. A liquid solidifies into a solid.
A liquid evaporates to a gas. A gas condenses into a liquid.
A solid can sublimate straight into a gas.

The specific heat capacity (c) of a substance is the change in energy (ΔE) needed to raise the temperature Δθ of 1kg (m) of the substance by 1°C. Hence: ΔE = mcΔθ

Thanks for watching,

Lewis

Relevant for GCSE Physics 9-1 in the following exam boards:
AQA (including Trilogy)

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[GastricIssuesFartman]

Great video! But i have one question, do we have to learn how to find the density of a liquid?

[callummullaney]

Hi sir whst is it called when a gas turns to a solid is that a thing???

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[g-shockforlife]

Can you do a similar video on AS level electricity