Mini-quiz B

Question 1

Charged atoms

Answer 1

Ions

Question 2

Positively charged atoms

Answer 2

Cations

Question 3

Negatively charged atoms

Answer 3

Anions

Question 4

Strength of ionic bonds

Answer 4

Strong

Question 5

Strength of covalent bonds

Answer 5

Strong

Question 6

Strength of hydrogen bonds

Answer 6

Weak

Question 7

Strength of Van der Waals Forces

Answer 7

Very weak

Question 8

Organic chemistry studies…

Answer 8

Carbon-based molecules

Question 9

Most common type of atoms in polar covalent bonds

Answer 9

O, N, P, and S

Question 10

Most common type of atoms in nonpolar covalent bonds

Answer 10

C and H

Question 11

Polar covalent hydrophilic vs hydrophobic

Answer 11

Hydrophilic

Question 12

Nonpolar covalent hydrophilic vs hydrophobic

Answer 12

Hydrophobic

Question 13

Special properties of water

Answer 13

Biological solvent (polar dissolve; nonpolar do not), heat (high specific heat capacity), cohesion & adhesion, and density (density lower when solid)

Question 14

What does pH stand for?

Answer 14

Power of hydrogen

Question 15

Which is higher in an acid: hydrogen ions or hydroxyl ions?

Answer 15

Hydrogen ions

Question 16

Which is higher in a base: hydrogen ions or hydroxyl ions?

Answer 16

Hydroxyl ions

Question 17

3 things that are pH dependant

Answer 17

Chemical bonds, molecule shape/structure, and biochemical reactions

Question 18

Buffer

Answer 18

Substance that helps maintain a fairly constant pH

Question 19

11 elements that make up almost ALL biological molecules:

Answer 19

C, H, N, O, P, S, Ca, K, Na, Cl, Mg

Question 20

Letter “R” signifies what…

Answer 20

Part of a molecule that can vary/change or part of molecule that we currently aren’t interested in.

Question 21

4 types of hydrocarbon structures

Answer 21

Straight chain, branched chain, double bonds between C chains, and ring structures

Question 22

What are isomers?

Answer 22

Different compounds with same atoms although arranged differently.