pH and reactions

Question 1

What does pH stand for?

Answer 1

potential hydrogen

Question 2

Only substances that contain ________ can have a pH

Answer 2

water

Question 3

The name for an atom or molecule that carries an electrical charge

Answer 3

ion

Question 4

The separation of an atom or molecule into positive and negative ions is called ___________

Answer 4

ionization

Question 5

An ion with a negative charge is called an ____________

Answer 5

anion

Question 6

An ion with a positive charge is called a __________

Answer 6

cation

Question 7

The more hydrogen ions are in a substance, the more __________ it is

Answer 7

acidic

Question 8

The more hydroxide ions are in a substance, the more __________ it is

Answer 8

alkaline

Question 9

This substance has a neutral pH

Answer 9

pure water

Question 10

What is the range of the pH scale?

Answer 10

0-14

Question 11

What is the average pH of human hair and skin?

Answer 11

5.5

Question 12

What is the name of the scale that measures the jump in acidity or alkaline between each number of the pH scale?

Answer 12

logarithmic scale

Question 13

Pure water can cause hair to swell by….

Answer 13

20%

Question 14

If a client has dry skin, you should avoid using a product that is too ______, or it might irritate their skin

Answer 14

acidic

Question 15

All alkalis owe their chemical reactivity to the _________

Answer 15

hydroxide ion

Question 16

Sodium hydroxide is commonly known as…

Answer 16

lye

Question 17

This reaction occurs when an acid is mixed with an alkali in equal proportions

Answer 17

acid-alkali neutralization reaction

Question 18

This is a chemical reaction in which oxidation and reduction take place at the same time

Answer 18

oxidation-reduction (redox)

Question 19

An ________ is a substance that release oxygen

Answer 19

oxidizing agent

Question 20

Give an example of an oxidizing agent

Answer 20

hydrogen peroxide

Question 21

This is a substance that adds hydrogen to a chemical compound or subtracts oxygen from the compound

Answer 21

reducing agent

Question 21

Give an example of a reducing agent

Answer 21

hair color

Question 22

When certain chemical reactions release energy in the form of heat, they are called…

Answer 22

exothermic reactions

Question 23

The rapid oxidization of a substance accompanied by the production of heat and light is called…

Answer 23

combustion

Question 24

A chemical reaction that requires the absorption of energy or heat from an external source for the reaction to actually occur

Answer 24

endothermic reaction