2.5 Study Guide

Question 1

Adhesion

Answer 1

The action of Hydrogen bonding with Water molecules and other substances.

Question 2

cohesion

Answer 2

The attraction of water to other water molecules

Question 3

solvent

Answer 3

dissolves solutes to create solutions.

Question 4

Specific heat

Answer 4

the amount of energy it takes to heat up 1g of a substance by 1 degree celcius.

Question 5

heat of vaporization

Answer 5

Energy it takes for 1 gram of water to evaporate to become water vapor. hydrogen bonds must break for this to happen.

Question 6

concentration

Answer 6

the amount of grams per liter in a solution

Question 7

pH

Answer 7

Potential Hydrogen

Question 8

pOH

Answer 8

Potential Hydroxide

Question 9

Hydroxide Ion

Answer 9

OH-

Question 10

Hydronium Ion

Answer 10

H3O+

Question 11

acid

Answer 11

a substance with a pH lessa than 7 and has more hydronium than hydroxide.

Question 12

base

Answer 12

A substane with a pH that’s more than y7and has more hydroxide than hydronium.

Question 13

Five properties of water

Answer 13

Adhesion+Cohesion, Solvent of life, Ice floats, Specific heat, and Heat of vaporization

Question 14

Adhesion and Cohesion

Answer 14

The polarity of water allows this to happen because we see it is able to attach to itself but also other substances because of the H ion.

Question 15

Solvent of life

Answer 15

The polarity of the water makes H2O a good solvent because many times if it is hydrophilic it will dissolve nicely in water.

Question 16

Ice floatin

Answer 16

The way this is ale to happen is how the H2O bonds to itself to make the ice. It’s not as tightly n=bonded together as water making it less dense even though its a solid.

Question 17

Specific heat

Answer 17

The polarity of the H2O creates the ability of the water to heat up without vaporizing fully whci means its hydrogen bonds are breaking and reforming.

Question 18

Heat of Vaporization

Answer 18

The polarity of the H2O Aloows the hydrogen bonds to fully break at the heat of vaportization which is how we find it.

Question 19

Why is it important to living things?

Answer 19

It’s important to living things especially humans because most of our body is made up of water.

Question 20

What is the [H3O+], [OH-}, and pOH when the pH is 6?

Answer 20

the [H30+] is 10^-8, the [OH-] is 10^-6 and the pOH is 8.

Question 21

Given the pH of 5 is the solution neutral, acidic, or basic?

Answer 21

acidic

Question 22

given the pOH of 6 is the solution neutral,acidic, or basic?

Answer 22

Basic