Chapter 12 Basics of chemistry-(hair school)
Elemental (SAME) molecules contain two or more ___ of the same amount in definite proportions.
A. Atoms
Volatile organic compounds contain ___ and evaporate very easily.
A. Carbon
Characteristics that can only be determined by a chemical reaction and a chemical change in a substance are
A. Chemical properties
Water-in-oil emulsions feel ___ than oil-in-water emulsions.
A. Greasier
Alpha hydroxy acids (AHAs) are derived from ____ and used in the salon to exfoliate the skin and help adjust the pH of certain products.
A. Plants
Alkanolamines are often used in place of ammonia because they
A. Produce less odor
A chemical reaction in which OXIDATION and REDUCTION takes place AT THE SAME TIME is
A. Redox
A(n) ___ is a stable physical mixture of two or more substances in a solvent.
A. Solution
Unstable physical mixtures of undissolved particles in a liquid are
A. Suspensions
The term logarithm means multiples of
B. 10
Chemically combining two or more atoms in definite proportions forms
B. A molecule
A substance that allows oil and water to mix or emulsify is called
B. A surfactant
An unstable physical mixture of two or more immiscible substances plus a special ingredient is
B. An emulsion
The ___ is the smallest chemical component of an element.
B. Atom
Chemical reactions that release a significant amount of HEAT under certain circumstances are
B. Exothermic
A pure substance is a chemical combination of matter in ____ proportions
B. Fixed
The chemical reaction that combines a substance with oxygen to produce an oxide is
B. Oxidation
A subtance that has a pH below 7.0 is considered to be
C. Acidic
The ingredient used to raise the pH in hair products to allow the solution to penetrate the hair shaft is
C. An alkaline solution
Inorganic chemistry is the study of substances that do not contain the element carbon, but may contain which element?
C. Hydrogen
Liquids that are NOT capable of being mixed together to form stable solutions are considered
C. Imminsible
The tail of a surfactant molecule is OIL-LOVING or
C. Lipophilic
Vapor is a ___ that has evaporated into a gas-like state.
C. Liquid
Any substance that occupies space and has mass is
C. Matter
An oxidizing agent is a substance that releases
C. Oxygen
A physical combination of matter in ANY proportion is a
C. Physical mixtre
A(n) ___ is a substance dissolved into a solution.
C. Solute
The glitter in nail polish that can seperate from the polish is an example of
D. A suspension
A substance that cannot be broken down it smaller substances without of loss of identity is
D. An element
Rapid oxidation of a substance accompanied by the production of heat and light is
D. Combustion
An atom or molecule that carries an electrical charge is called a
D. Ion
Which of these is NOT composed of organic chemicals?
D. Minerals
Characteristics that can be determined without a chemical reaction and that do not involve a chemical change in the substance are
D. Physical properties
A chemical combination of matter in definite properties is a(n)
D. Pure substance