pH

Question 1

pH def

Answer 1

Potential hydrogen; a numerical measurement that indicates the acidity or alkalinity of a water-based substance

Question 2

Only solutions containing _____ or solutions that can be dissolved in ________ can have a value that is ________ or ________

Answer 2

Only solutions containing water or solutions that can be dissolved in water can have a value that is acidic or alkaline

Question 3

Acids and alkalis change the balance of ____ and ___ ions in water

Answer 3

Hydrogen and hydroxide

Question 4

Acids def

Answer 4

A substance that increases the concentration of hydrogen ions when places in water because it donates, or releases H+ ions; tends to taste sour and react strongly with metals

Question 5

When acids and alkalis are brought together, they

Answer 5

Neutralize each other

Question 6

Alkalis tend to taste and feel like what

Answer 6

Bitter and feel slippery

Question 7

If a solution is acidic, then

Answer 7

A solution has more positive hydrogen ions than negative hydroxide ions

Question 8

If a solution is neutral, then

Answer 8

A solution has an equal number of positive and negative ions

Question 9

When a solution is alkaline, then

Answer 9

The solution has more negative hydroxide ions

Question 10

Distilled water on the pH scale

Answer 10

Neutral pH of 7

Question 11

pH values below 7 indicates more

Answer 11

Acidity

Question 12

pH values above 7 indicates more

Answer 12

Alkaline

Question 13

Logarithmic def

Answer 13

Each change of value along the pH scale is a change of 10x

Question 14

The pH scale is a logarithmic scale that ranges from

Answer 14

0-14

Question 15

Three ways to measure pH

Answer 15

pH meter
Universal indicator solution
Universal indicator paper

Question 16

Of the three ways to measure pH, which is most accurate

Answer 16

The pH meter

Question 17

Indicator solution and indicator paper both use ______ _____ to indicate pH

Answer 17

Color changes

Question 18

What time of paper is the indicator paper and what colors does it turn

Answer 18

Litmus paper

Blue litmus paper turns red in an acid; red litmus paper turns blue in an alkali

Question 19

What is the pH balance of the skin

Answer 19

4.5-5.5

Question 20

What can high pH products do to your skin

Answer 20

Can strip the protective layer of the acid mantle; change the skin’s pH to a highly alkaline level

Question 21

Permeability def

Answer 21

The skin’s ability to allow liquids or gasses to pass through it

Question 22

After using a high pH product (cleanser), its recommended to apply

Answer 22

A mild pH balancing toner or moisturizer to restore the skin’s pH to its natural range