Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bio 1 > Ch 3 > Flashcards

Ch 3 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What percentage of the human body is water?

A

60-70%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What properties of water make it special?

A

Its polar covalent bonding and hydrogen bonds between molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Special properties of water

A

High heat capacity and heat of vaporization, dissociation into ions that lead to generating pH, co and adhesion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Water has a net charge

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Hydrogen is slightly positive and oxygen is slightly negative.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Hydrophilic

A

Polar substance that dissolves in water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Hydrophobic

A

Nonpolar molecules like oils and fats that do not interact with water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Hydrogen bonds are broken by _________ ______ as heat _______

A

Kinetic energy; rises

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

_____ is lower density than _____ because of _____ bonds

A

Ice; water; hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

High heat of vaporization

A

Amt of E required to change one gram of liquid to gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Water has a low heat of vaporization

A

False; high heat of vaporization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Water is a _____ because it is ______ .

A

Solvent; polar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Cohesion

A

Water molecules are attracted to eachother due to h bonds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

________ is why water forms a dome like shape

A

Cohesion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Adhesion

A

The attraction of water and other molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Water molecules “climbing” up a capillary tube

A

Adhesion

17
Q

Low levels of hydrogen ions is

A

High pH, basic

18
Q

High concentrations of H ions is

A

Low pH, acidic

19
Q

Buffers

A

Absorb excess H+ or OH- to keep pH optimal in the body

20
Q

Carbonic acid

A

If there is too much OH-, it combines with it to create bicarbonate, lowering the pH

21
Q

Specific heat

A

Amount of heat gained or lost to change the temperature of one gram of substance by 1C

22
Q

Why does water absorb a lot of heat before its temperature rises?

A

Hydrogen bonds absorb the heat increase

Bio 1 (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions