ch 2 pt 2

Question 1

Sharing e-

Answer 1

covalent

Question 2

Sharing e- unequally

Answer 2

Polar

Question 3

Sharing e- equally

Answer 3

Non-polar

Question 4

Hydrophilic

Answer 4

polar

Question 5

Hydrophobic

Answer 5

non-polar

Question 6

Hydro stands for what?

Answer 6

water

Question 7

Philic stands for what?

Answer 7

loving

Question 8

What does Intermolecular attractions do?

Answer 8

Weak chemical attractions between molecules

Question 9

Why are intermolecular attractions important?

Answer 9

They shape complex molecules

Question 10

Examples of intermolecular attractions

Answer 10

DNA and proteins

Question 11

Hydrogen bonds form from what?

Answer 11

Polar molecules

Question 12

Hydrogen bonds individually are what?

Answer 12

weak

Question 13

Hydrogen bonds together are what?

Answer 13

Strong

Question 14

What influences how water molecules behave?

Answer 14

hydrogen bonds

Question 15

Example of hydrophobic interactions

Answer 15

oil and water

Question 16

What are hydrophobic interactions?

Answer 16

Nonpolar molecules placed in a polar substance

Question 17

How much of the body is water weight?

Answer 17

2/3

Question 18

3 phases of water

Answer 18

gas, liquid, solid

Question 19

4 functions of liquid water

Answer 19

transport, lubricates, cushions, excretes waste

Question 20

Example of transport

Answer 20

water

Question 21

Example of lubricates

Answer 21

surous fluid

Question 22

Example of cushions

Answer 22

water in cells

Question 23

Example of excretes waste

Answer 23

urine

Question 24

Adhesion

Answer 24

water stick to other substances

Question 24

Surface tension

Answer 24

force doesn't break, floats on top of water

Question 25

Cohesion

Answer 25

water sticks to itself

Question 26

Specific heat

Answer 26

Water has a high specific heat due to energy needed to break hydrogen bonds

Question 27

What is kinetic energy?

Answer 27

Form of energy by motion.

Question 28

What are solutes?

Answer 28

What's being dissolved

Question 28

Heat of vaporization

Answer 28

How much heat is needed from a liquid to a gas

Question 28

Water is called what because most substances dissolve in it?

Answer 28

Universal solvent

Question 28

What is water of the body?

Answer 28

Solvent

Question 29

What are solvent?

Answer 29

What's doing the dissolving

Question 30

What conducts currents?

Answer 30

Electrolytes

Question 31

What is hydration shell?

Answer 31

When water surrounds substances

Question 32

What is hydrophobic exclusion?

Answer 32

Cohesive water molecules "force out" nonpolar molecules

Question 32

What does phobic stand for?

Answer 32

Fearing

Question 33

Hydrophobic interaction does what?

Answer 33

Excludes molecules

Question 34

Whats the point of carrier proteins?

Answer 34

To get from one part of the body to another

Question 35

Amphipathic molecules have what region?

Answer 35

Both polar and nonpolar

Question 36

Phospholipid molecules are

Answer 36

amphipathic

Question 37

Polar heads have contact with what?

Answer 37

Water

Question 38

Water spontaneously dissociates to form what?

Answer 38

ions

Question 39

How long is the ph scale

Answer 39

14

Question 40

pH values of acid

Answer 40

0-6

Question 41

pH values of base

Answer 41

8-14

Question 42

pH value 7 is

Answer 42

neutral (water)

Question 43

The greatest H+ and strong acid is

Answer 43

0

Question 44

The strong base is on the pH value is

Answer 44

14

Question 45

Give H+

Answer 45

Acid

Question 46

Absorb H+

Answer 46

Base

Question 47

As H+ concentration increases, pH

Answer 47

decreases

Question 48

As H+ concentration decreases, pH

Answer 48

increases

Question 49

What is the pH value for human blood?

Answer 49

7.35-7.45

Question 50

pH value is what?

Answer 50

10 fold change

Question 51

Neutralization

Answer 51

Returns to neutral (pH 7)

Question 52

What does buffers do?

Answer 52

Helps prevent pH changes if excess acid or base is added

Question 53

What are mixtures?

Answer 53

Combining two or more substances together

Question 54

3 categories of water mixtures

Answer 54

suspension, colloid, solution

Question 55

Suspension motion

Answer 55

does not remain mixed unless in motion

Question 56

Colloid motion

Answer 56

remains mixed even not in motion

Question 57

Solution motion

Answer 57

does not settle if solution is not in motion

Question 58

Which water mixtures does not scatter light?

Answer 58

solution

Question 58

What is emulsion?

Answer 58

When a polar and nonpolar interaction won't mix