Difference between revisions of "3-FAM-04"
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* Let the students represent particles of matter. Sitting in their chairs, the students represent the orderly arrangement of particles in a solid. An increase in the temperature of a solid will increase the vibrations of the particles and thus their kinetic energy. As energy is added at the melting point, only the potential energy of the particles is increased such that they will break loose from their fixed positions and become more disorganized. Use the students to illustrate this. In the liquid state energy added increases the kinetic energy. The particles are free to slip and slide over one another and they will move back and forth at a faster rate. You can go onto representing a gas. | * Let the students represent particles of matter. Sitting in their chairs, the students represent the orderly arrangement of particles in a solid. An increase in the temperature of a solid will increase the vibrations of the particles and thus their kinetic energy. As energy is added at the melting point, only the potential energy of the particles is increased such that they will break loose from their fixed positions and become more disorganized. Use the students to illustrate this. In the liquid state energy added increases the kinetic energy. The particles are free to slip and slide over one another and they will move back and forth at a faster rate. You can go onto representing a gas. | ||
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| + | [[Forces & Matter]] | ||
Revision as of 11:26, 11 October 2009
Contents
Outcomes
- Pupils should understand how states of matter can be classified in terms of their characteristics e.g. compressibility, ease of flow, maintenance of shape and volume.
- Pupils should be able to describe the main aspects of and explanations for Brownian Motion.
Specification References
- 5.7 Recall that particles in a liquid have a random motion within a close-packed structure.
- 5.8 Recall that particles in a solid vibrate about fixed positions within a close-packed regular structure.
Starter
Main Body of Lesson
- Pupils could test materials to come up with a list of the characteristics of the 3 states as shown below.
- Learn that Brownian motion is a random movement of particles in liquids and gases. Pupils to observe and draw the motion of smoke in a smoke cell.
- Use the kinetic theory model to explain the change between states
Plenary
- Could act out the molecular arrangement of a solid, liquid and gas (see additional notes)
Homework
- Questions sheet
- Research the 4th state of matter – Plasma
- Find out what the hardest solid known to man is. Extension- Explain what makes this substance so strong with reference to the molecular arrangement
- How the properties of liquids allow them to be used in simple hydraulic systems.
Additional Information
Resources Required
- Kinetic Theory model
- Circus of Solids, liquid and gases
- 1) Liquids (such as: milk, water, oil, honey)
- 2) Solids (such as: a block, a ball, a sponge, a feather, a brick and a duck)
- 3) Gases (such as: balloons filled with air and balloons with helium, a garbage bag with dry ice, blocked syringe with air, a flask with a small amount of vinegar and baking soda with balloon over mouth.
Textbook References
- Physics for You – pg 55-59
Website References
Skills Addressed
- Observing and Inferring
Safety/Hazards
- dropping a brick on one's foot.
Notes
- Let the students represent particles of matter. Sitting in their chairs, the students represent the orderly arrangement of particles in a solid. An increase in the temperature of a solid will increase the vibrations of the particles and thus their kinetic energy. As energy is added at the melting point, only the potential energy of the particles is increased such that they will break loose from their fixed positions and become more disorganized. Use the students to illustrate this. In the liquid state energy added increases the kinetic energy. The particles are free to slip and slide over one another and they will move back and forth at a faster rate. You can go onto representing a gas.
