Presentation:

Equipment:

Handout Sheet:

Demonstrations:

Activity	Type of chemistry	Demonstration	Equipment
Syringe Solids	Compression	Hold down the end and compress the plunger to observe the ease of compression.	3 syringes with sand, water and air
Losing your bearing	Viscosity	Fill 3 measuring cylinders with oil and water. Drop 3 ball bearings simultaneously (by 3 volunteers) to test viscosity.	3 measuring cylinders, 3 ball bearings, oil, water.
Bubbly bubbles	Surface tension	Blow bubbles. Is it a liquid or gas?	Water, detergent & glycerine mixture, basin, wire ring (make one).
Irregular shapes	Measuring volume	Use displacement of liquids using 2 beakers to find volume of rock. Use measuring cylinder to do the same.	Measuring cylinder, large rock, 1 large and small beakers, and measuring cups.
Meniscus	Surface tension	Observe the meniscus.	measuring cylinder or beaker with water in it.
Boat racers	Surface tension	Dropper detergent into the back of boat and watch it fly.	basin, water, detergent, cardboard boat, eye dropper.
Lets boil water	Boiling point	Measure the temperature of water every minute as it boils and graph temperature versus time. Maximum temperature of 100 degrees celsius.	Kettle, water, thermometer
Sweating soft drink	Condensation	Dry the outside of soft drink with towel. After a few minutes use the paper towel to observe condensation of moisture in air on the can.	Can of soft drink, towel and paper towel.
Blowing up bottles	Expansion of gases	Pour hot water into an empty plastic drink bottle and cover with a balloon. Watch the expansion of balloon.	Plastic drink bottle, boiling water and balloon.
Weight of air	Gas has weight	Connect 2 inflated balloons by string to 2 ends of the straw. Balance the straw on your finger and mark the point. Pop one and watch one end fall.	2 straws, string, 2 balloons, pin.
Hot can Cold can	Insulation	Set up 3 lamps on 3 cans of water with one control and 2 insulated cans. Watch the changes in temperatures.	3 aluminium cans, water, 3 lamps, 2 insulating materials.
Heavy metal	Densities	Measure the mass of 3 different identical sized cubes.	3-4 identical volume cubes: wood, aluminium and brass, electronic scales
Hot metal	Conductivity	Place 3 identical cubes into hot water. Which is hotter?	3-4 identical volume cubes: wood, aluminium and brass in hot water.
Weight in liquid	Bouyancy	Measure the weight of an identical weight suspended in oil, water or just air.	3 spring balances, 3 beakers of oil, water and air. 1 weight
Dry ice	Sublimation	Place a piece of dry ice onto paper towel and watch it dissappear and not turn to liquid.	dry ice, paper towel.

Topic notes:

Professor Cludd presenting information related to "Solids, Liquids & Gases". Students could be able to:

• change of states of substances;

Introduction to Solids, Liquids and Gases:

Describing "Solids, Liquids & Gases" ...

Complete the following table ...

Substances	State of substances	Can the shape be changed easily?	Does it take up space?	Can it be compressed?
Ice	solid	.	.	.
Water	liquid	.	.	.
Air	gas	.	.	.
Etc.	.	.	.	.

Summary of properties ...

Property	Solid	Liquid	Gas
Does it keep its shape?	Yes	It takes the shape of the container	It FILLS the container
Can its shape be easily changed?	No	Yes	Yes
Does it take up a fixed volume?	Yes	Yes	No. It will diffuse through to spread evenly within its container.
Can it be poured?	Some can (eg. salt, sand and sugar)	Yes and will eventually over flow the container	No
Can it be compressed?	Not really	Yes	Very easily