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Chemistry

Study of the Skin
Across
An example of a physical mixture
Properties that include melting and boiling points
An example of a pure substance
Made from mixing plant oils or animal fats with alkaline solutions
Classified as acids, salts, oxides, and bases
______ are usually water-based
Where soft water comes from
A substance from which ______ has been removed is a reduced substance
5.0 is an average pH of ________
Chemical changes that can occur in the hair due to oxidation
A ____ substance that is dissolved in another substance
Pure water has a ______ pH
Two or more substances united physically and in any proportions
Hair reaction to solutions with a pH below 7
Colorless gas composed of hydrogen & nitrogen
What hard water can be softened by
The process in which water is used in the manufacture of cosmetics
Substances that are easy to mix together
Water in its gas state
______ a special type of oil that do not cause comedones
Down
Chemical combinations of two or more atoms
Basic building blocks of all matter
Agent that come in 20 to 40 volume
A pH above 7.0 and softens and swells the hair
Cannot chemically be separated into simpler substances
_________ is an example of a compound
Produced when dissolving a liquid, solid and gas
_____ chemistry is the study of substances containing carbon
Oxidation and reduction
Chemical reactions that give off heat
Remove superfluous hair by dissolving it at the skin line
Substance that measures its acidity and alkalinity
When mixing equal portions of acids and alkalis
Ingredient that creates a barrier to keep the natural water and oil in skin tissues
Mixtures that are not usually transparent
Held together by an emulsifying agent called surfactant
Atom or molecule that carries an electrical charge