102.11-102.12 Chemistry Test WK 2 Flashcards
The term used to identify anything that occupies space and has weight is called what?
Matter
All matter that is now living or was alive at one time, with carbon present, falls within the scientific division of what?
Organic chemistry
Which of the following is NOT an example of a physical change?
Iron changing to rust
Water freezing and becoming ice is an example of what type of change?
Physical
Basic substances that cannot be broken down into simpler substances are called what?
Elements
Two or more of the same atoms joined together by a chemical bond is a what?
Molecule
When two hydrogen atoms combine with pine oxygen atom, the result is a water molecule, which is what?
Compound
Atoms that are the same form a what?
Element
Carbon, oxygen, hydrogen and nitrogen form the basis of what?
Amino Acids
What is created when amino acids join together in chains?
Proteins
What is 97% of hair consist of?
Keratin
Which of the following statements describes how human hair is formed?
Linking together of protein groups
The bonds found within hair that help organize protein chains in order to build hair are called what?
Side Bonds
Which bonds found in the hair can be easily broken by heat or water?
Hydrogen Bonds
What is the side bond that is of the greatest concern to the salon professional?
Disulfide Bonds
Substances of acidic or alkaline nature dissolve in water and/or contain what?
Water
A solution that has more positive hydrogen ions than negative hydroxide ions is what?
Acidic
What is not true about pH?
Values below 7 indicate more alkalinity
What is distilled water with d ph of considered?
Neutral
A ph of 5 is now many more times acidic than a ph of 10
10
In what ph range is skin and hair?
4.5 t0 5.5
What cosmetic classification represents a mixture of two or more kinds of molecules evenly dispersed?
Solution
What is a substance that is able to dissolve another substance?
solvent
The instructions On a product State to shake well before use, which indicates the product is a what?
Suspension
What is formed when two or more immiscble substances are united with the help of a birder?
Emulsion
An example of an oil-in-water emulsion is what?
Perm solution
What are mixtures of organic substances and a medicinal agent?
Ointments
Mixtures of fats and oils converted to fatty acids by heat and then purified, fall under which of the following cosmetic classifications?
Soaps
What cosmetic classification requires sifting until free-of-coarse gritty particles?
Powder
In the process of making a cup of instant hot cocoa, what would the dry cocoa represent?
Solute
Cleaning the hair and scalp and removing all foreign matter without adversely affecting either the scalp or hair is called what?
Shampooing
What is not a true statement about surfactants?
Prevents shampoo from lathering
