Ph of a solution and idicators

Question 1

what is an electrolyte

Answer 1

a substance that when you dissolve it in water, will conduct electricity

Question 2

name three electrolytes

Answer 2

acids, bases and salts

Question 3

when electrolytes dissolves they dissociate into…

Answer 3

ions

Question 4

what allows the flow of an electric current?

Answer 4

ions

Question 5

compounds that do not conduct electricity when dissolved in water are called what?

Answer 5

non-electrolytes

Question 6

give two examples of non-electrolytes

Answer 6

sugars (glucose) and alcohols (methanol)

Question 7

what is electrical conductivity?

Answer 7

the ability of a solution to conduct electricity

Question 8

when you dissolve an acid, base or salt what happens?

Answer 8

they separate into two ions (charged particles) one ion is positive and the other is negative

Question 9

alkali metals have a charge of?

Answer 9

+1

Question 10

alkaline earth metals have a charge of?

Answer 10

+2

Question 11

oxygen family has a charge of?

Answer 11

-2

Question 12

halogens have a charge of?

Answer 12

-1

Question 13

what is the ionic dissociation of NaOH?

Answer 13

NaOH -> Na+ + OH-

Question 14

the material used in a conductivity meter is a…

Answer 14

metal

Question 15

all solutions conduct electricity because they contain….

Answer 15

ions

Question 16

a solution is made up of..

Answer 16

a solute and a solvent

Question 17

define solute

Answer 17

substance that is being dissolved

Question 18

define solvent

Answer 18

substance that is does the dissolving

Question 19

define aqueous solution

Answer 19

the solvent is water

Question 20

the pH of a solution indicates what in a solution?

Answer 20

the concentration of H+

Question 21

on a pH scale 0 to 6 means its..

Answer 21

acidic

Question 22

on a pH scale 7 means its..

Answer 22

neutral

Question 23

on a pH scale 8 to 14 means its..

Answer 23

basic

Question 24

If the solution is acidic (pH <7) what does that indicate

Answer 24

acids have more H+ ions than OH- ions

Question 25

if the solution is neutral (pH=7) what does that indicate

Answer 25

neutral solutions have NO ions or equal amounts of H+ and OH- ions

Question 26

if the solution is basic (pH >7) what does that indicate

Answer 26

bases have more OH- ions than H+ ions

Question 27

the pH scale is a _________ scale

Answer 27

logarithmic

Question 28

when the pH value increases by 1 what happens? (scale)

Answer 28

there is a 10 fold decrease in acidity

Question 29

when the pH value decreases by 1 what happens? (scale)

Answer 29

there is a 10 fold increase in acidity