Water review

Question 1

charges in water molecule

Answer 1

oxygen is partial negative

hydrogen is partial positive

Question 2

angle of water molecule

Answer 2

104.5

Question 3

electronegativity values are close

Answer 3

nonpolar covalent

Question 4

electronegativity values are different

Answer 4

polar covalent

Question 5

atoms are classified as metals

Answer 5

metallic bonding

Question 6

atoms are classified as non metals

Answer 6

covalent bonds

Question 7

electronegativity values are very different

Answer 7

ionic bonding

Question 8

bond between oxygen and hydrogen is

Answer 8

polar

Question 9

water is a ____ because the positive and negative charges are separate

Answer 9

dipole

Question 10

three most important noncovalent bonds

Answer 10

ionic interactions
van der waals forces
hydrogen bonds

Question 11

water molecules are attracted to each other by

Answer 11

hydrogen bonds

Question 12

how many hydrogen bonds formed by one water molecule

Answer 12

4

Question 13

occur between neutral, permanent, and/or induced dipoles

Answer 13

van der waals forces

Question 14

water is considered the ideal biological solvent because

Answer 14

water can dissolve ionic and polar substances

water molecules form solvation spheres around ions

Question 15

property of water to stick together

Answer 15

cohesion

Question 16

property of water to stick with other substances

Answer 16

adhesion

Question 17

hydrogen bonds because of surface area and pressure allows certain organisms to walk on water

Answer 17

surface tension

Question 18

why are waters melting and boiling points exceptionally high

Answer 18

the hydrogen bonds

Question 19

water has an exceptionally high heat of vaporization which

Answer 19

helps maintain an organisms internal temperature

Question 20

contain both polar and nonpolar groups

Answer 20

amphipathic molecules

Question 21

amphipathic molecules form

Answer 21

micelles

Question 22

spontaneous passage of solvent molecules through a semipermeable membrane

Answer 22

osmosis

Question 23

two big characteristics of osmosis

Answer 23

pressure required to stop net flow of water across a membrane
depends on a solute concentration

Question 24

solutions are equal

Answer 24

isotonic

Question 25

outside has fewer molecules than the inside

Answer 25

hypotonic

Question 26

outside has more molecules than inside

Answer 26

hypertonic

Question 27

addition of solutes to water _____vapor pressure

Answer 27

lowers

Question 28

addition of solutes to water _____boiling point

Answer 28

increases

Question 29

addition of solutes to water ____ the freezing point of water

Answer 29

lowers