What happens to the color of the solution when phenolphthalein is added to sodium hydroxide?

Acid-Base Reactions and Neutralization Explained

Interactive Video
•
Chemistry, Science, Biology
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It turns pink
It remains colorless
It turns blue
It turns green
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of phenolphthalein in the experiment?
It acts as an indicator
It acts as an acid
It acts as a solvent
It acts as a base
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is observed when hydrochloric acid is added to the sodium hydroxide solution?
The solution turns green
The solution turns blue
The solution remains pink
The solution turns colorless
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the reappearance of the pink color indicate when sodium hydroxide is added back to the mixture?
The acid is neutralized
The solution is acidic
The base is neutralized
The acid is still present
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the products of a neutralization reaction?
Acid and base
Salt and water
Salt and acid
Water and gas
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which compound is formed when hydrochloric acid reacts with calcium hydroxide?
Sodium chloride
Calcium chloride
Potassium chloride
Magnesium chloride
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main purpose of an antacid?
To make the stomach more acidic
To produce more hydrochloric acid
To neutralize stomach acid
To increase stomach acid
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What sensation is caused by excess stomach acid?
Cooling sensation
Itching
Burning sensation
Numbness
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of adding an antacid to stomach acid?
It increases acidity
It produces more acid
It has no effect
It forms salt and water
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