

Crystallization Process Quiz
Interactive Video
•
Chemistry
•
6th - 8th Grade
•
Practice Problem
•
Hard
Jennifer Brown
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary ingredient needed to grow crystals in this experiment?
Salt
Sugar
Alum
Baking Soda
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in creating starter crystal seeds?
Fill a glass half full of hot water
Add alum to cold water
Tie a fishing line to a popsicle stick
Place a coffee filter over the glass
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you know when the alum has stopped dissolving in the water?
The water changes color
The alum powder remains at the bottom
The solution becomes clear
The water starts boiling
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should you do if crystals start accumulating at the bottom of the glass during the growth process?
Stir the solution continuously
Add more alum
Add more water
Remove the large crystal and reheat the solution
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the solubility of alum in water as the temperature increases?
It decreases
It fluctuates
It remains the same
It increases
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a supersaturated solution?
A solution with less solubility than normal
A solution with more solubility than normal
A solution that has no solubility
A solution that is at room temperature
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do alum molecules prefer to attach to existing crystals?
They dissolve faster on existing crystals
They are attracted to new surfaces
They are repelled by other alum molecules
They prefer stability of existing formations
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