Campbell Biology: Quiz Practice Questions Flashcards


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created 8 years ago by Neil
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Campbell Biology
Chapters 3, 4
Grade levels:
College: First year
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1

Four Properties of Water

cohesive behavior
moderate temperature
expansion upon freezing
versatility as a solvent

2

Cohesion

hydrogen bonds hold water molecules together

3

Adhesion

an attraction between different substance

4

Evaporating cooling

as a liquid evaporates, its remaining surface cools

5

Moderation of Temperature

heat is absorbed and released
evaporating cooling

6

Solvent

the dissolving agent of the solution

7

Solute

substance that is dissolved

8

Solution

a liquid that is a homogenous mixture of substances

9

Aqueous solution

water is solvent

10

Hydration shell

ion surrounded by a sphere of water molecules when dissolved in water

11

Hydrophobic substance

substance that does not have affinity for water

12

Hydrophilic substance

substance that has affinity for water

13

Colloid

a stable suspension of fine particles in a liquid

14

Is oil hydrophobic, hydrophilic, or a colloid?

hydrophobic

15

Is paper hydrophobic, hydrophilic, or a colloid?

hydrophilic

16

Is cotton hydrophobic, hydrophilic, or a colloid

hydrophilic and colloid

17

What allows water molecules to form hydrogen molecules with each other?

polarity

18

What is used to describe whether a solution is acidic or basic?

pH scale

19

A substance that reduces H+ ion conc is called a base. True or False

true

20

What is the pH for a neutral solution?

pH 7

21

A substance which has more OH- conc and less H+ conc is _____________

basic substance

22

Buffers

substances that minimize concentrations of H+ and OH- in a solution

23

Acid precipitation

rain, snow, or fog with a pH lower than 5.6

24

What is the valence for Carbon?

four

25

What are frequent partners of Carbon?

Hydrogen, Oxygen, and Nitrogen

26

Name the different types of variations in Carbon skeletons

Length
Branching
Double Bonds
Rings

27

What are isomers?

compounds with the same molecular formula but different structures

28

Different types of isomers

Structural, geometric, enantiomers

29

What are structural isomers?

different covalent arrangements

30

What are geometric isomers

differ in spatial arrangements

31

What are enantiomers?

mirror images of each other

32

What are functional groups?

components of organic molecules that are most commonly involved in chemical reactions

33

Name the seven functional groups discussed in class

Hydroxyl group
Carbonyl group
Carboxyl group
Amino group
Sulfhydryl group
Phosphate group
Methyl group

34
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Hydroxyl group

35
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Carbonyl group

36
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Carboxyl group

37
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Amino

38
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Sulfhydryl

39
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Phosphate

40
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Methyl