julequiz
Quiz
•
Chemistry, Physics, Science
•
12th Grade
•
Practice Problem
•
Hard
Used 9+ times
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Snekrystaller dannes, når vanddamp ændres fra en gas direkte til et fast stof. Dette kaldes:
fordampning
kondensation
sublimation
desposition
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sandt/Falsk: Sne er hvid på grund af iskrystaller, der reflekterer alle farver i det synlige spektrum
sandt
falsk
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvilken videnskabsmand opfandt en kemisk test, der kan bruges til at belægge indersiden af kugler med sølv?
Bernhard Tollens
Karl Möbius
Emil Erlenmeyer
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvad får en nytårsknallert til at "spænge"?
sort krudt
sølvfulminat
nitrogetriiodid
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvilken kemisk reaktion er ansvarlig for både perfekt brunede julekager og sprød, gylden and?
Maillard reaktionen
Hodge reaktionen
Caramel reaktionen
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvem elsker ikke et fyrværkeri? Men hvilket grundstof bruges mest til at producere farven grøn?
magnesium
natrium
barium
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nævn det stof, der gør juletræer grønne.
E-102 (tartrazin)
Chlorophyll
Chloroplasts
Phenolphthalein
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