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Mixtures & Solutions #2
Test Description: Part II Questions 11 - 20
Instructions: Answer all questions to get your test result.
1) After I’ve shaken my solution for 5 minutes there still are salt crystals on the bottom. I must have a _________?
A
Property
B
Solvent
C
Soluable Solute
D
Saturated Solution
2) Using Kool-Aid as an example, would you describe a LOW CONCENTRATION as
A
Strong taste and light liquid
B
little flavor and light liguid
C
Strong taste and a dark liquid
D
Little taste and a dark liquid
3) Yuck! My Kool-Aid is too sweet! I’ll add more water and that will make my solution …(another word for less concentrated)
A
Diluted
B
Soluable
C
Stronger
D
Saturated
4) What is solubility?
A
The property substances have of dissolving in solvents (liquid)
B
When a liquid can't hold any more material and it won't dissolve
C
How quickly a liquid evaporates
D
When a material "falls out" of the water
5) True or False all mixtures and solutions can be separated?
A
False
B
True
C
I don't know
D
Maybe
6) There’s two cups with salt water in them. How can I tell which is more concentrate without tasting it or waiting to let it evaporate?
A
Use a balance
B
Use a screen
C
Taste it anyway
D
Use a coffee filter
7) A funnel was used to make two saturated solution of salt water. If the solutions were made at the same temperature, which is true. They have the same…
A
concentration
B
properties
C
amount of water
D
mass of salt
8) 3 ways you can you separate a mixture/solution
A
Evaporation, filter, fill a syringe
B
Screen, filter, evaporation
C
Filter, balance it, evaporate
D
Screen, filter, stir stick
9) Name one material from class that we saw form crystals when evaporated and one that does not.
A
Pepper and Gravel
B
Citric Acid and Salt
C
Sand and Baking Soda
D
Salt and Sand
10) What is the most concentrated
A
Cup D: 1 spoon 100 ml of water
B
Cup B: 3 spoons in 50 ml of water
C
Cup A: 1 spoon in 50 ml of water
D
Cup C: 3 spoons in 150 ml of water
*select an answer for all questions
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