Unit 1: Structure of Water + Hydrogen Bonding

Question 1

Composition of Water

Answer 1

2 hydrogen + 1 oxygen

Question 2

Electronegative

Answer 2

measure of an atom’s ability to attract shared electrons to itself

Question 3

Hydrogen Bond

Answer 3

• type of attractive interaction between an electronegative atom and a hydrogen atom bonded to another electronegative atom
• weak bond

Question 4

adhesion

Answer 4

attraction of molecules of a different kind

Question 5

cohesion

Answer 5

something sticking to itself

Question 6

capillary action

Answer 6

process of a liquid flowing in a narrow space without the assistance of any external forces like gravity

Question 7

hydrophilic

Answer 7

like water + can dissolve in water
anything that is charged and polar

Question 8

hydrophobic

Answer 8

fear of water + cannot be dissolved in water

Question 9

heat of vaporization

Answer 9

energy to cause water to boil

Question 10

specific heat

Answer 10

specifically how much does it change one degree Celsius

Question 11

elements

Answer 11

different types of substances on the periodic table defined by atoms

negatively charged but the nucleus is positively charged

Question 12

protons

Answer 12

positive charge

Question 13

neutrons

Answer 13

neutral charge

Question 14

atomic number

Answer 14

number of protons

Question 15

Functional Groups

Answer 15

hydroxyl, methyl, sulfhydryl, phosphate, carbonyl, carboxyl, amino

Question 16

hydroxyl

Answer 16

hydrogen bonds

Question 17

methyl

Answer 17

hydrophobic

Question 18

sulfhydryl

Answer 18

disulfide bridges

Question 19

phosphate

Answer 19

on your DNA

Question 20

carbonyl

Answer 20

sugar

Question 21

carboxyl

Answer 21

acidic

Question 22

amino

Answer 22

basic

Question 23

ionic bonds

Answer 23

• becomes ionic
• strong
• cation: positive
• anion: negative

Question 24

covalent bond

Answer 24

• two shared electrons
• non-polar: don’t hog electrons
  -polar: hogs electrons