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GCSE Physics   Topic – Particle model of matter    © Copyright The PiXL Club Ltd, 2017 This resource is strictly for the use of member schools for as long as they remain members of The PiXL Club. It may not be copied, sold nor transferred to a third party or used by the school after membership ceases. Until such time it may be freely used within the member school. All opinions and contributions are those of the authors. The contents of this resource are not connected with nor endorsed by any other company, organisation or institution. www.pixl.org.uk The PiXL Club Ltd, Company number 07321607

The arrows show the direction in change of state. GetIT – Particle model of matter Particles cannot be squashed, but the gaps between them can change. Density is determined by the mass of the atoms and how closely they are packed together. The state of matter tells you if it is solid, liquid or gas. Matter can change state. The arrows show the direction in change of state.

Match IT Density Solid Liquid Gas Evaporating Condensing   Change in state from liquid to gas when the temperature is lower than the boiling point Solid Energy required to raise temperature of 1Kg of substance by 1oC Liquid Change in state from a liquid to a gas at a specific temperature Gas Energy required to change the state of 1Kg of substance without a change in temperature Evaporating Amount of substance per unit volume. Mass ÷ Volume Condensing No fixed size or shape; can be compressed Specific Heat Capacity Change in state from gas to liquid Specific Latent Heat Fixed size but not shape; particles close together and attract each other Boiling Fixed size and shape; particles vibrate but cannot change position

Match IT - Answers Density Solid Liquid Gas Evaporating Condensing   Amount of substance per unit volume. Mass ÷ Volume Solid Fixed size and shape; particles vibrate but cannot change position Liquid Fixed size but not shape; particles close together and attract each other Gas No fixed size or shape; can be compressed Evaporating Change in state from liquid to gas when the temperature is lower than the boiling point Condensing Change in state from gas to liquid Specific Heat Capacity Energy required to raise temperature of 1Kg of substance by 1oC Specific Latent Heat Energy required to change the state of 1Kg of substance without a change in temperature Boiling Change in state from a liquid to a gas at a specific temperature

Label IT Label the diagram. This is a temperature-time graph for melting ice. Add diagrams to show how the particles would be arranged at each stage.

Label IT - Answers

Label IT - Answers Solid   Fixed size and shape; particles vibrate but cannot change position Liquid Fixed size but not shape; particles close together and attract each other Gas No fixed size or shape; can be compressed Boiling Change in state from a liquid to a gas at a specific temperature Melting Change in state from a solid to a liquid