White Powder Analysis Pre-Lab Quiz
Quiz
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Other
•
12th Grade
•
Medium
Tiffany Scholle
Used 4+ times
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many of the powders will be soluble in water?
3
5
7
10
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The iodine reagent test is used to identify which powder?
Sucrose
CaSO4
CaCO3
Cornstarch
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
How many "dump and refill" steps are in the flow chart? (answer with a number)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which powder is identified through precipitate formation (gel-like beads) when sodium hydroxide is added to the dissolved sample?
NaOH
MgSO4
H3BO3
NaCl
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which powder is more soluble in hot water?
Sugar
Salt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If you know you will be running chemical testing with the powders, what is the first thing you should do upon starting your process?
Portion out a small sample of each unknown powder
Refill the distilled water bottle
Put a drop of iodine in three test tubes
Start a beaker of water on a hot plate
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Your unknown powder is non-soluble in water, turns brown when iodine is added and has no reaction with vinegar. What is it?
NaCO3
CaSO4
NaOH
CaCO3
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