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Spa Science
Ch. 5 Review Questions
| Spa Science | Ch. 5 Review Questions |
|---|---|
| The effects of cosmetic products on the skin are based on _____ . | chemical reactions |
| The two main brances of chemistry are ________ and ___________. | Organic and inorganic |
| What are organic substances? | Organic substances were once alive, are sometimes called natural, and will burn. Example: gasoline |
| What are inorganic substances? | Inorganic substances have never been alive and will not burn. Example: metal |
| Matter assumes the shape of a solid, liquid, or gas depending on its __________. | temperature |
| A form of matter that cannot be broken down into simpler substances is the __________. | element |
| The smallest part of an element that still retains the properties of that element is called a/an ____ . | atom |
| Water and table salt are types of _______ . | compounds |
| When a physical change occurs in a substance, the change takes place in its ___________ ______________ . | physical properties |
| Physical properties include _____________ . | color, odor, density, specific gravity, melting point, boiling point, and hardness |
| The element oxygen is the most _________ element. | abundant |
| Oxygen is found both free and in compounds and is a ____________, _____________, and __________ gas. | colorless, odorless, tasteless |
| Hydrogen peroxide is a compound made up of __________ and ___________ . | hydrogen and oxygen |
| The pH scale measures the relative degree of ___________ or _____________ . | acidity or alkalinity |
| Alkalis or bases have a pH above _________, taste __________, and turn litmus paper from _______ to _______ . | 7.0, bitter, red, blue |
| Sebum and sweat on the skin create a barrier on the surface caled the ________ ____________ . | acid mantle |
| When equal amounts of acids and alkalis are mixed together, they _________ each other to form ________ (H2O) and a _________. | water, salt |
| When oxygen is removed from a substance, the chemical reaction is called ___________ . | reduction |
| In redoc reactions, the two chemical processes that take place simultaneously are _________ and ___________ . | oxidation and reduction |
| A usually liquid substance that dissolves another substance is called a _____________ . | solvent |
| Immiscible liquids are not capable of being _________ . | mixed |
| Calamine lotion is a type of ___________ . | suspension |
| An emulsion is a mixture of two or more immiscible substances united with the aid of a _________ or ____________ . | binder, emulsifier |
| The head of a surfactant molecule is _________ . | hydrophilic |
| Oil-in-water emulsion occurs when oil droplets are ________ in a water base. | suspended |
| Surfactants are an ingredient in _____________ . | emulsions |
Created by:
KLeonard
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