Chemistry COS

Atoms have three main parts: protons, neutrons, and:

When two hydrogen atoms combine with one oxygen atom, the result is a water molecule, which is a(n):

The bonds found within hair that help organize protein chains in order to build hair are called:

Hair consists of 97%

Which bonds found in the hair can be easily broken by heat or water?

Which bond is the backbone of all protein molecules?

pH balanced refers to a product that ranges from a pH of:

On a pH scale, numbers less than 7 indicate a(n)

The scientific study of matter and the physical and chemical changes of matter is known as:

Electrons have which type of electrical charge?

The simplest atomic structure is:

Two or more of the same atoms joined together by a chemical bond is a(n):

What color does red litmus paper turn when placed in an alkali?

Which of the following items have definite weight and volume but no definite shape?

Which type of bond does number 3 represent on the illustration

Water molecules have two hydrogen atoms and one:

Matter with definite weight but indefinite volume and shape is called:

Which of the following elements is the most abundant in the earth's crust:

Amino acids that create proteins are linked together end to end by:

Hair comprises two solids which are carbon and sulfur and three gases which are hydrogen, nitrogen and:

The atomic number of a particular element indicates:

The most accurate method of measuring pH is with:

What freezing and becoming ice is an example of what type of change?

Which of the following actions is NOT an example of a physical change?

What color does blue litmus paper turn when placed in an acid?

Alkalis tend to taste:

Substances of acidic or alkaline nature dissolve in water and/ or contain:

A solution that has more positive hydrogen ions than negative hydroxide ions is:

Protons have which type of electrical charge?

Neutrons have which type of electrical charge?

All matter that is now living or was alive at once time, with carbon present, falls within the scientific division of:

Atoms that are different from a(n)

Atoms that are the same form a(n):

In what pH range is skin and hair?

When a solution has an equal number of hydrogen and hydroxide ions, the solution is considered:

Which of the following conditions is an example of chemical change?

Matter with definite weight and volume but no definite shape is called:

a pH of 5 is how many more times acidic than a pH of 6?

Matter with definite weight, volume and shape is known as:

Which of the following statements describes how human hair is formed?

The term used to identify anything that occupies space and has weight is called:

Which of the following statements describes how human hair is formed?

What is the side bond that is of the greatest concern to the salon professional?

Carbon, oxygen, hydrogen, and nitrogen form the basis of:

When amino acids combine to form the protein of the hair:

Putting a sodium hydroxide relaxer under a hair dryer:

on the pH scale, numbers greater than 7 indicate a(n):

All of the following statements regarding pH are true EXCEPT

Distilled water with a pH of 7 is considered: