particle theory activity

particle theory activity - Before heating During heating...

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SNC 1D/P The Particle Theory Activity Name:_______ Purpose: To study the behaviour of particles and explain it using the Particle Theory. Procedure: 1. Make qualitative observations to describe the physical properties (colour, shape, state, luster) of the iodine crystals 2. Heat a test tube containing iodine crystals by placing it in boiling water. 3. Then cool the test tube by removing from the boiling water & placing it in a beaker of cool water. 4. Make qualitative observations during and after heating. Materials: iodine crystals boiling water hot plate test tube and cotton Observations: Qualitative Observations of Iodine Crystals Being Heated and Cooled.
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Unformatted text preview: Before heating During heating After heating state: shape: colour: luster: Questions: 1. What is the hazard associated with iodine? 2. Use the particle theory to explain what causes a solid to have definite shape and volume. 3. Describe how the particle theory explains the observations that a solid expands when heated. 4. Explain what boiling is in terms of the particle theory. 5. Gas particles are considered to have very little attraction for one another. Explain. 6. a) What changes of state did you observe in this activity? b) What do we call the process involved in these changes of state? ___________________________ Conclusion :...
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This note was uploaded on 11/13/2010 for the course CHM CHM2132 taught by Professor Goto during the Fall '07 term at University of Ottawa.

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