matter, in particular that the model, use a tray, filled with particles within the substance are ping-pong balls (or marbles), not solid spheres and that the and shake it. You can vary forces between the particles are the number of ping-pong balls not represented. to demonstrate the three states. 6.3.1.1. The particle model The differences in density 0.5 Explain why the different states Make models of solids, liquids Cyberphysics – of matter to between the different states of matter have different densities and gases using plasticine. The Particle explain density of of matter to be explained in in of mass and volume of the Does the model produced Theory states of – materials. terms of the arrangements of material.. show the 3D structure of matter the particles (atoms or these states? Use the model Draw diagrams to show the molecules). of the tray filled with particle arrangement of solids, balls if you haven’t done liquids and Use the it in The particle model of diagrams to explain the matter lesson. differences in densities between 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)? 6.3.1.2 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 How do you account for the Explain how, when a substance discrepancy? changes the mass of the substance is unchanged as there is still the same number of atoms
matter, in particular that the particles within the substance are not solid spheres and that the forces between the particles are not represented. model, use a tray, filled with ping-pong balls (or marbles), and shake it. You can vary the number of ping-pong balls to demonstrate the three states. 6.3.1.1. 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 of mass and volume of the material.. Draw diagrams to show the particle arrangement of solids, liquids and 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 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 6.3.1.2 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 Explain how, when a substance changes the mass of the substance is unchanged as there is still the same number of atoms 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-8464F-SOW-MATTER.DOCX