Biochemistry Flashcards

1
Q

What happens to electrons in ionic bonds?

A

they are transferred

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

What happens to electrons in covalent bonds?

A

they are shared

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

What types of bonds do metals and non-metals form?

A

ionic

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

What types of bonds do 2 non-metals form?

A

covalent

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

What is electronegativity in atoms?

A

Refers to how much an atom wants to ATTRACT an electron.

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

The higher the electronegativity value, the _______ that atom attracts electrons (MORE/LESS)

A

More

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

In a non-polar covalent bond, the electronegativity difference is between _____ and _____

A

0 and 0.4

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

In a polar covalent bond, the electronegativity difference is between ____ and _____

A

0.5 and 1.9

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

In an ionic bond, the electronegativity difference is between ____ and _____

A

2.0 and 4.0

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

A non-polar covalent bond has an _____ share of electrons (EQUAL/UNEQUAL)

A

Equal

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

A polar covalent bond has an ______ share of electrons (EQUAL/UNEQUAL)

A

Unequal

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

What does this symbol mean? δ+

A

Partially positive (less electronegative)

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

What does this symbol mean? δ−

A

Partially negative (more electronegative)

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

Polar Molecules require which 2 things to be true?

A

The molecule must contain polar bonds. It will be an asymmetric molecule

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

Non-polar molecules will be __________? (SYMMETRICAL/ASYMMETRICAL)

A

Symmetrical

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

What does this symbol represent?

A

Bipole

17
Q

Water is a ____ molecule (POLAR/NON-POLAR)

A

Polar

18
Q

What types of bonds are formed between water molecules?

A

Hydrogen bonds

19
Q

In our bodies, water acts as a ______ (SOLVENT/SOLUTE)

A

Solvent - it dissolves other polar molecules easily like salt NaCl, Non-polar substances, like fats, do not dissolve in water

20
Q

What is ADHESION in water molecules

A

When the water molecules stick to other substances

21
Q

What is COHESION in water molecules

A

When water sticks to other water molecules

22
Q

How does water help our bodies?

A

Dissolves polar solutes (like salt)

Lubricates your joints

Good temperature regulator (absorbs heat without changing to a gas)

23
Q
A