PERIOD SIX - Science 8
Chemical and Physical Changes
It is expected that students will:
- use a kinetic particle model to describe the structure and properties of various states of matter
- categorize a selection of materials as elements, compounds, or mixtures
- assess the properties of materials in terms of their effectiveness for particular uses
- relate the derivation of the symbols to the names of the elements
- give examples to show that the elements are grouped on the periodic table according to similar properties
Demo of an "Exploding Balloon"
Review notes on Kinetic Molecular Theory.
Make sure your questions and data tables for experiments 1 (mass) and 2 (volume) are handed in.
Go over the terms for changes of state : melting, freezing, evaporation, condensation, and sublimation
Hand in phase diagram that you made last day (similar to the one on page 125 of Science 8 Probe, and label it).
Review phase diagram using overhead "Changes in Phases of Matter".
Go over questions 3 and 6 on page 125 of Science Probe 8.
Do the "Matter Worksheet", to be handed out in class.
Discuss the Changes that Matter can undergo - Physical, Chemical and Nuclear!
Write down examples and definitions of Chemical and Physical Changes. Read outloud in class page 136-137, and then do questions 1,2 page 140.
If time classify the following demonstrations as Chemical or Physical Changes.
Do the Lab on Chemical and Physical Changes. The lab sheet will be handed out during class.
When finished the lab work on the Physical Changes worksheet.