ch 2 part 3 reviews

Question 1

coavlent bond

Answer 1

The electron cloud surrounds both atoms
polar versus nonpolar
two atoms share electron

Question 2

hydrogen bond

Answer 2

weak bond
form between two polar molecules
positve hydrogen and negative element

Question 3

property of molecules of substance like water in which the molecules stick togather

Answer 3

cohesive

Question 4

________unique property of water are the result of hydrogen bond

Answer 4

cohesive

Question 5

small objects will “float” on the surface of a fluid why ?

Answer 5

surface tension

Question 6

Hydrogen bonds between molecules give water properties critical to life.

Answer 6

relatively high boiling point, high specific heat, cohesion, adhesion and density
A Good Solvent
نقطة غليان عالية نسبيًا، حرارة نوعية عالية، تماسك، التصاق وكثافة مذيب جيد

Question 7

States of Water

Answer 7

gas, liquid and solid

Question 8

Solid (ice):

Answer 8

when water freezes the water molecules form a crystalline structure; less dense when frozen

Question 9

Gas form:

Answer 9

as the heat increases, hydrogen bonds break completely

Question 10

Liquid form:

Answer 10

h-bonds are constantly forming and breaking