Water and Solutions -- for Dirty Laundry: Crash Course Chemistry

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Chemistry, Science, Physics
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11th Grade - University
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is water considered essential for life on Earth?
It is a good conductor of electricity.
It is a strong acid.
It acts as a solvent for many chemical reactions.
It is a source of energy.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What makes bleach effective in removing stains?
It is a strong acid.
It is a strong oxidizer.
It is a non-polar solvent.
It is a reducing agent.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a property of water that makes it an excellent solvent?
It is a gas at room temperature.
It is polar.
It is abundant.
It is non-polar.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are electrolytes?
Non-polar molecules in water.
Ions in water that conduct electricity.
Molecules that do not dissolve in water.
Substances that increase water's boiling point.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who discovered that substances dissolved in water conduct electric currents?
Svante Arrhenius
Michael Faraday
Albert Einstein
William Whewell
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is molarity?
The number of grams of solute per kilogram of solvent.
The number of grams of solute per liter of solution.
The number of moles of solute per liter of solution.
The number of moles of solute per kilogram of solvent.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you dilute a solution?
Add more solute.
Add more solvent.
Decrease the pressure.
Increase the temperature.
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