8 Science
Separating mixtures
Separating Mixtures Through Sieving & Decanting
AIM: To investigate methods of separating mixtures in an everyday situation.
APPARATUS: -
cooking utensils (bowl, wooden spoon)
1 egg
- ½ cup sugar
1 cup SR flour
- ½ cup milk
1 tblspn butter
- handful of sultanas
sieve
- desert spoon
patty pans
- vanilla
METHOD:
1. Cream butter and sugar in a small bowl. 2. Sift flour into bowl. 3. Add
lightly beaten egg, milk and vanilla to bowl. 4. Soak sultanas in warm water.
5. Decant off the water. 6. Place sultanas on paper towel and pat. 7. Add to
bowl. 8. Beat until lightly blended (a smooth consistency). 9. Place in a preheated oven set to 200oC for 12 – 15 minutes.
RESULTS:
Successful?
Easy?
Sifting flour
Decanting water
OBSERVATIONS:
CONCLUSION & QUESTIONS:
1. a) What happened to the flour when sifted?
b) What mixture is being separated here?
2. a) How do you decant something?
b) What mixture was being separated by decanting in your cooking?
3. Complete the following conclusion:
We can find methods for separating mixtures in our
everyday lives. An example is ____________ where we
used _________ and ___________ to separate
__________ and __________, and __________ and
_____________.