What property of water allows it to dissolve many ionic and polar substances?
Water

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Chemistry
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9th - 10th Grade
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Low density
High dielectric constant
Low boiling point
High viscosity
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the bond angle in a water molecule due to lone pair repulsion?
120 degrees
180 degrees
90 degrees
104.5 degrees
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the crystalline structure of ice at atmospheric pressure?
Cubic
Hexagonal
Tetragonal
Orthorhombic
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does water behave when it reacts with highly electropositive metals?
It is reduced to dihydrogen
It forms hydrates
It remains unchanged
It forms a precipitate
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main cause of temporary hardness in water?
Soluble nitrates
Soluble chlorides
Soluble bicarbonates
Soluble sulfates
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method involves exchanging calcium and magnesium ions for sodium ions to soften water?
Ion exchange
Lime treatment
Washing soda treatment
Boiling
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What compound is used to remove permanent hardness by forming complex ions with calcium and magnesium?
Magnesium sulfate
Calcium carbonate
Sodium hexametaphosphate
Sodium chloride
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