gr7

gr7

Tuesday 10 November 2015

Nov 10



Science Lab 5: Solutes vs Solvents Pg.41 Try This
Context:
·         A solute is the smaller part of a solution.
·         A solvent is the larger part of a solution.
·         A solvent (i.e. water) dissolves a solute (i.e. salt) forming a solution – in this case, brine.
·         Water is the ultimate solvent since it’s able to dissolve, dilute and absorb a variety of substances, including contaminants.
·         Air also has the capability of absorbing and carrying contaminants like car and industrial emissions.

Purpose:
This experiment will compare how sugar (solute) dissolves in 3 different liquids (solvents) namely: water, rubbing alcohol, and oil.

Hypothesis:
If I stir sugar in a glass of water, then I think… because…
If I stir sugar in a glass of rubbing alcohol, then I think… because…
If I stir sugar in a glass of oil, then I think… because…

Observations:
Procedure
What I see happening
Time elapsed
Sugar stirred in water


Sugar stirred in rubbing alcohol


Sugar stirred in oil



Analysis:
The sugar particles were strongly attracted/repelled by the water particles.
The sugar particles were strongly attracted/repelled by the rubbing alcohol particles.
The sugar particles were strongly attracted/repelled by the oil particles.

Conclusion:
What did you learn about the solubility of solutes in solvents?


Math: Linear Relationships







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Continue working on today's reading response questions to novel study of Little Prince.  This is set #4 of questions to answer.  Sets 1 thru 4 reading response will be due Nov.12th
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