*Unit 2 Part 4: Properties of Water

Question 1

What is water’s chemical formula?

Answer 1

H2O

Question 2

Is the following statement true or false?
Water is essential to life.

Answer 2

True

Question 3

Water is a _____ molecule.

Answer 3

polar

Question 4

Is the following statement true or false?
Hydrogen is negative.

Answer 4

False

Question 5

Is the following statement true or false?
Hydrogen is positive.

Answer 5

True

Question 6

Is the following statement true or false?
Oxygen is negative.

Answer 6

True

Question 7

Is the following statement true or false?
Oxygen is positive.

Answer 7

False

Question 8

What kind of bond do H2O molecules form with other H2O molecules?

Answer 8

Hydrogen Bonds

Question 9

What causes water to have unique properties?

Answer 9

Hydrogen Bonds

Question 10

_____ hydrogens of one H2O molecules are attracted to the _____ oxygen of other H2O molecules.

Answer 10

positive; negative

Question 11

Cohesion

Answer 11

Water molecules attracted to each other

Question 12

Adhesion

Answer 12

Water attacted to different materials

Question 13

Universal Solvent

Answer 13

Water dissolves many substances

Question 14

High Specific Heat

Answer 14

Water absorps heat when it evaporates. It takes a long time to boil.

Question 15

What property of water prevents lakes and oceans from freezing solid?

Answer 15

Ice floats

Question 16

What are two effects of cohesion?

Answer 16

Capillary Action and Surface Tension

Question 17

Capillary Action

Answer 17

The ability of a liquid to flow in narrow spaces in opposition to external forces like gravity

Question 18

Surface Tension

Answer 18

Something denser than water can float/run across the surface