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S3W3 Homework: What are solutions?

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Last updated 6 months ago
9 questions
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Question 1
1.

watch the following video on solutions. Do you have any questions?

Question 2
2.

Categorize the behaviors of different mixtures

  • Particles in liquid won't settle, but the mixture is still heterogeneous
  • particles in the liquid are mixed at a molecular level. Single molecules or atoms are between molecules of the liquid
  • Particles in the liquid can be filtered out
  • particles in the liquid will settle over time
Question 3
3.

Categorize the types of mixtures

  • salt water
  • muddy water
  • OIl and vinegar salad dressing
  • glue
Question 4
4.

Watch the following video
do you have any questions?

Question 5
5.

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Question 6
6.

6th and 7th graders - you are free to go. 8th graders - answer the following questions

What happens at a molecular level when you heat a liquid that allows the liquid to dissolve more solute? You may have to research this online.

Question 7
7.

Stirring will not increase the saturation of a solvent at a certain temperature, but it will make the solute dissolve faster. Can you think why that is?

Question 8
8.

Increasing the temperature of a solvent will not only increase how much solute you can dissolve, but will make the solute dissolve faster. Can you think why that is?

Question 9
9.

We will have a discussion in class where the 8th graders try to explain these phenomenon. how comfortable are you with your explanations?

particles in the liquid are too small to be filtered but large enough to scatter light
particles in the liquid do not scatter light
Suspension
Solution
colloid
milk
sugar water
Suspension
Solution
colloid
match the vocab word to a definition
unsaturated
a homogenous mixture where one substance is mixed with another at a molecular level. The mixture doesn't settle over time, it cannot be filtered out, and it does not scatter light.
Solvent
The fluid that will dissolve a substance (the water in salt water)
precipitate
the substance being dissolved (the salt in salt water)
solute
how much solute is in the solution per unit of solvent
Saturated
when a solvent is holding the maximum amount of solute
Supersaturation
When a solution has been heated, brought to saturation, and then allowed to cool without the solute coming out of solution.
Solution
solute that comes out of solution
concentration
a solution that can dissolve more solute