Copper Ion Reactions Quiz
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Practice Problem
•
Hard
Jennifer Brown
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is observed when copper two-plus ions react with sodium hydroxide?
A green gas is released
A light blue precipitate forms
No reaction occurs
A dark blue solution forms
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when excess sodium hydroxide is added to the copper two-plus ions?
The solution turns green
The precipitate remains insoluble
A red precipitate forms
The precipitate dissolves
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the reaction of copper two-plus ions with ammonia change with excess ammonia?
The precipitate dissolves into a dark blue solution
The precipitate remains unchanged
The solution turns red
A yellow gas is released
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial observation when copper two-plus ions react with a small amount of ammonia?
No visible change occurs
A yellow precipitate forms
A light blue precipitate forms
A dark blue solution forms
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of hydroxide ions in the reaction with copper two-plus ions?
They form a gas
They react to form copper hydroxide
They dissolve the precipitate
They have no effect
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