are not solid spheres and that and shake it. You can vary the forces between the particles the number of ping-pong are not represented. balls to demonstrate the three states. 4.3.1.1. The particle model The differences in density 0.5 Explain why the different states Make models of solids, Cyberphysics – of matter to between the different states of matter have different densities liquids and gases using The Particle explain density of of matter to be explained in in terms of mass and volume of plasticine. Does the model Theory states of – materials. terms of the arrangements of the material.. produced show the 3D matter the particles (atoms or structure of these states? Draw diagrams to show the molecules). Use the model of the tray particle arrangement of solids, filled with ping-pong balls if liquids and gases. Use the you haven’t done it in The diagrams to explain the particle model of matter differences in densities between lesson. solids, liquids and gases. Evaluate the models used to explain the properties of solids, liquids and gases. How well do these models cope with water which is less dense than ice (solid water)? 4.3.1.2 Changing the When substances change 0.5 Why do substances change Find, by experiment, the state of a state (melt, freeze, boil, state? melting point of salol. substance. evaporate, condense or Compare value obtained with Why does the temperature of a sublimate), mass is true value. Is there a substance remain constant when conserved. discrepancy? the substance is changing state? How do you account for the Explain how, when a substance discrepancy? changes state, the mass of the substance is unchanged as there is still the same number of atoms in the substance and it is just
are not solid spheres and that the forces between the particles are not represented. and shake it. You can vary the number of ping-pong balls to demonstrate the three states. 4.3.1.1. The particle model of matter to explain density of materials. The differences in density between the different states of matter to be explained in terms of the arrangements of the particles (atoms or molecules). 0.5 Explain why the different states of matter have different densities in terms of mass and volume of the material.. Draw diagrams to show the particle arrangement of solids, liquids and gases. Use the diagrams to explain the differences in densities between solids, liquids and gases. Make models of solids, liquids and gases using plasticine. Does the model produced show the 3D structure of these states? Use the model of the tray filled with ping-pong balls if you haven’t done it in The particle model of matter lesson. Evaluate the models used to explain the properties of solids, liquids and gases. How well do these models cope with water which is less dense than ice (solid water)? Cyberphysics – The Particle Theory – states of matter 4.3.1.2 Changing the state of a substance. When substances change state (melt, freeze, boil, evaporate, condense or sublimate), mass is conserved. 0.5 Why do substances change state? Why does the temperature of a substance remain constant when the substance is changing state? Explain how, when a substance changes state, the mass of the substance is unchanged as there is still the same number of atoms in the substance and it is just Find, by experiment, the melting point of salol. Compare value obtained with true value. Is there a discrepancy? How do you account for the discrepancy?
AQA-8463-SOW-MATTER.DOCX