Chapter 6 - Chemistry & Chemical Safety

What Is the average pH for hair and skin?

5

There are 118 different elements known to science today. How many of these are naturally occurring on earth?

98

Which of the following are the basic building blocks of all matter?

Atoms

The letter H stands for the element ________.

Hydrogen

The tail of a surfactant molecule is _________, or oil loving

Lipophilic

The tail of a surfactant molecule is __________, or oil loving.

Lipophilic

Which of the following is defined as anything that occupies space (volume) and has mass (weight)?

Matter

An example of a water-in-oil emulsion is?

Mayonnaise

The letters pH denote ______, which is the relative degree of acidity or alkalinity of a substance

Potential Hydrogen

_____________ are examples of emulsions used in beauty services

Shampoos and conditioners

A __________ is a stable, uniform mixture of two or more mixable substances that is made by dissolving a solid, liquid, or gaseous substance in another substance.

Solution

A _______________ is a stable, uniform mixture of two or more mixa le substances that is made by dissolving a solid, liquid, or gaseous substance in another substance.

Solution

Which of the following allows oil and water to mix or emulsify by reducing surface tension?

Surfactant

An example of an elemental molecule is?

The oxygen in the air

What does a pH below 7 indicate?

an acidic solution

What does pH below 7 indicate

an acidic solution

an example of a water-in-oil emulsion is

mayonnaise

Nonaqueous solutions, such as alcohol or oil, do not have _____

pH

The letters pH denote _____________ which his the relative degree of acidity or alkalinity of a substance

potential hydrogen

Acidic solutions tend to _______ the hair

relax

______ are examples of emulsions used in beauty services

shampoos and conditioners

which of the following allows oil and water to mix or emulsify by reducing surface tension?

surfactant

Nail polish, with glitter that can separate from the polish, is an example of a(n)

suspension

The pH scale measures the concentration of hydrogen ions in acidic and alkaline ________ solutions

water-based

The pH scale measures the concentration of hydrogen ions in acidic and alkaline __________ solutions

water-based