Quiz about Intro to Water Test

Question 1

What percentage of the Earth's surface is covered by water?

Accepted Answer

75%

Answer

25%

Answer

50%

Answer

100%

Question 2

Life on Earth likely began in the oceans.

Accepted Answer

True

Answer

False

Question 3

Water is called the universal solvent because it can dissolve a wide range of substances

Accepted Answer

True

Answer

False

Question 4

Oils and lipids dissolve easily in water.

Accepted Answer

False

Answer

True

Question 5

How many bonds can a water molecule (H2O) form?

Accepted Answer

4

Answer

1

Answer

2

Answer

3

Question 6

What is the primary reason that life likely began in water?

Accepted Answer

Water provides a stable environment for biochemical reactions.

Answer

Water is the only liquid on Earth.

Answer

Water is the most abundant gas in the atmosphere.

Answer

Water prevents the formation of covalent bonds.

Question 7

How many hydrogen molecules does an oxygen atom covalently bond with to form a water molecule?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 8

What property of water helps regulate temperature on Earth?

Accepted Answer

High specific heat capacity

Answer

Low specific heat capacity

Answer

Inability to form hydrogen bonds

Answer

Lack of cohesion

Question 9

In a hydrogen bond, what is attracted to the slightly positive hydrogen atom of a nearby water molecule?

Accepted Answer

A slightly negative oxygen atom

Answer

Another hydrogen atom

Answer

A positively charged ion

Answer

A negatively charged ion

Question 10

What does hydrophobic mean in relation to substances in water?

Accepted Answer

They are repelled by water.

Answer

They dissolve easily.

Answer

They form strong bonds with water.

Answer

They have a high affinity for water

Question 11

Which of the following substances is hydrophilic?

Accepted Answer

salt

Answer

oils

Answer

lipids

Answer

none of the above

Question 12

What is the main reason why water is considered the universal solvent?

Accepted Answer

It can dissolve a wide range of substances.

Answer

It dissolves only organic compounds.

Answer

It has a low specific heat capacity.

Answer

It forms weak bonds with other molecules.

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