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100
The term used to identify anything that occupies space is called:
What is matter
100
Which of the following is NOT an example of a physical change? a. rusting of a nail b. performing a haircut c. shattering a piece of glass d. performing a thermal style
What is rusting of a nail
100
Melting ice changes water from a solid to a liquid. Boiling water changes water from a liquid to a gas. These are examples of what type of change?
What is physical
100
Atoms make up elements. Elements make up matter. Therefore, all matter is comprised of:
What is atoms
100
All matter that is living or once was living contains carbon and deals with:
What is organic chemistry
200
Basic substances that cannot be broken down into simpler substances are called:
What is elements
200
Atoms that are the same form a(n):
What is element
200
Two or more of the same atoms joined together by a chemical bond is a (n):
What is molecule
200
When two hydrogen atoms combine with one oxygen atom, the result is water, which is called a (n):
What is compound
200
Carbon, nitrogen, oxygen and hydrogen form the basis of:
What is amino acids
300
What is created when amino acids join together in chains?
What is proteins
300
What makes up the primary composition of hair?
What is keratin
300
Which bonds found in the hair can be easily broken by heat or water?
What is hydrogen bonds
300
The bonds found within hair that help organize protein chains in order to build hair are called:
What is side bonds
300
What is the side bond that is of the greatest concern to the cosmetologist?
What is disulfide bond
400
Which of the following statements describes how human hair is formed? a. salt bonds connect to amino acids b. hydrogen bonds create a chemical change c. amino acids cause a simple physical change d. protein chains connect to other protein chains.
What is protein chains connect to other protein chains
400
Substances of acidic or alkaline nature dissolve in water and/or contain:
What is water
400
A solution that has more positive hydrogen ions than negative hydroxide ions is:
What is acidic
400
A pH of 5 is how many more times acidic than a pH of 6?
What is 10
400
All of the following statements regarding pH are true EXCEPT: a. pH measurement scale ranges from 0 to 14 b. a solution is acidic if it has more negative hydroxide ions c. solutions with equal hydrogen and hydroxide ions are neutral d. pH is a unit of measurement that indicates whether a substance is acidic, neutral or alkaline
What is a solution is acidic if it has more negative hydroxide ions
500
Distilled water with a pH of 7 is considered:
What is neutral
500
In what pH range is skin and hair?
What is 4.5 to 5.5
500
In the process of making a cup of instant hot chocolate, what would the powdered chocolate represent?
What is solute
500
A mixture of two or more kinds of molecules, evenly dispersed would be a (n):
What is solution
500
A substance that is able to dissolve another substance is called a (n):
What is solvent