
Zinc Coating and Brass Formation
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard

Lucas Foster
FREE Resource
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial step in creating a gold-like penny?
Melting zinc and copper together
Using a gold paint
Coating a copper penny with zinc
Heating the penny directly
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is sodium hydroxide used in the experiment?
To melt the zinc
To create a strong basic solution
To create a strong acidic solution
To dissolve the copper
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What precaution is necessary when handling sodium hydroxide?
It is extremely cold
It is very sticky
It is fairly dangerous
It is highly flammable
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role does the hot plate play in the experiment?
It cools down the solution
It dissolves the copper
It changes the color of zinc
It speeds up the coating process
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How long does it typically take for the pennies to be coated with zinc?
5 to 10 minutes
15 to 30 minutes
1 to 2 hours
Overnight
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the penny's color after it is coated with zinc?
The copper color is no longer visible
It turns red
It turns blue
It becomes transparent
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of applying heat to the zinc-coated penny?
The penny turns silver
The penny melts completely
The zinc evaporates
The zinc and copper form brass
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is brass preferred over zinc for the final product?
Brass is more colorful
Brass is less expensive
Brass does not corrode like zinc
Brass is lighter
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