Vocabulary
is the science that deals with the composition, structures, and properties of matter and how matter changes under different conditions
Chemistry
What is the pH scale used to measure?
the acidity and alkalinity of substances
This type of product does not contain any animal ingredients or animal by-products.
Vegan
Liquids that are mutually soluble meaning they can be mixed together to form solutions are what?
Miscible
Chemicals that should not be mixed or even stored near each other.
Incompatible
a substance that causes or is believed to cause cancer
carcinogen
A pH below 7 indicates an _____, while a pH above 7 indicates an _____
acidic solution, alkaline solution
Comedogenic refers to ingredients that tend to clog pores and noncomedogenic refers to ingredients that will not clog pores.
Unstable physical mixtures of undissolved particles in a liquid are..
Suspensions
What does SDS stand for?
Safety Data Sheet
a rapid oxidation of a substance accompanied by the production of heat and light
combustion
What is the pH of hair and skin?
5
Natural-sourced ingredients that are grown without the use of pesticides or chemicals are referred to as?
Organic
An ingredient that brings two normally incompatible materials together and binds them into a uniform and thoroughly stable mixture.
Emulsifier
When properly mixing chemicals with water which do you add to the other?
Chemical is added to the water
a chemical reaction that requires the absorption of energy or heat from an external source for the reaction to occur
endothermic reaction
What acid is derived from plants?
Alpha hydroxy acids (AHAs)
"Dermatologist tested" and "non-irritating" are terms that describe what type of ingredients?
Hypoallergenic
Substances that allow oil and water to mix or emulsify.
Surfactant
A substance that may cause cancer but not always.
Mutagen
a colorless liquid or white crystals with a strong unpleasant odor that is used in permanent waving solutions
thioglycolic acid
What occurs when an acid is mixed with an alkali in equal proportions, balancing the total pH and forming ware and a salt
Acid-alkali neutralization reactions
What is the difference between unscented and fragrance-free?
Unscented refers to products formulated with no smell and have ingredients added to omit any odor. Fragrance-free are products that have no additional ingredients added for scent.
In this emulsion the droplets of water are surrounded by surfactants with their hydrophilic heads pointing in and their lipophilic tails pointing out.
Water-in-oil emulsions
How many categories are included in the safety data sheet?
16