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All haircolor products are organic chemicals.
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Most organic substances do not burn because they do not contain carbon.
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Chapter 12
Basics of Chemistry
| Question | Answer |
|---|---|
| All haircolor products are organic chemicals. | True |
| Most organic substances do not burn because they do not contain carbon. | False |
| There are 60 naturally occurring elements, each with its own distinct physical and chemical properties. | False |
| Sodium chloride is water. | False |
| The oxidation of haircolor is an example of a physical change. | False |
| Water and alcohol are examples of miscible liquids. | True |
| People began making soaps about 4,500 years ago by boiling oil or animal fat with wood ashes. | True |
| Cold cream is an example of an oil-in-water emulsion of two immiscible liquids. | False |
| The branch of science that applies to substances that contain carbon is called: | organic chemistry |
| All matter has physical and chemical properties and exists in the form of a: a. solid c. gas b. liquid d. All of these answers are correct. | All of these answers are correct. |
| The simplest form of chemical matter that cannot be broken down without the loss of identity is a(n): | element |
| Elements differ from one another because of the difference in the structure of their: | atoms |
| Chemically combining two or more atoms produces a: | molecule |
| The chemical combination of two or more atoms of different elements produces a(n): | compound |
| Change in the form of a substance that does not cause a chemical reaction is a(n): | physical change |
| Chemical reactions that are characterized by or formed by giving off heat are: | exothermic |
| A chemical combination of matter in definite (fixed) proportions is a: | pure substance |
| Air contains many substances, including nitrogen, carbon dioxide, and water vapor, and is an example of a: | physical mixture |
| A stable physical mixture of two or more substances is a(n): | solution |
| A substance, usually liquid, that dissolves another substance to form a solution is a(n): | solvent |
| Liquids that can be mixed together to form stable solutions are: | miscible |
| An unstable physical mixture of two or more immiscible substances is a(n): | emulsion |
| Substances that allow oil and water to mix, or emulsify, are: | surfactants |
| Substances used to neutralize acids or raise the pH of many hair products are: | alkanolamines |
| An example of an ammonia compound that is used to perform chemical services in a salon is: | ammonium hydroxide |
| A sweet, colorless, oily substance that is used as a moisturizer in skin and body creams is: | glycerin |
| A common volatile organic compound used in hair spray is: | ethyl alcohol |
| An atom or molecule that carries an electrical charge is a(n): | ion |
| Ions with a positive electrical charge are considered to be: | cation |
| A solution with a pH value of 7 indicates a(n): | neutral solution |
| Separation of an atom or molecule into positive and negative ions. | Ionization |
| Capable of combining with or attracting water (water-loving). | Hydrophilic |
| Study of substances that do not contain the element carbon, but may contain the element hydrogen. | Inorganic chemistry |
| Rapid oxidation of a substance, accompanied by the production of heat and light. | Combustion |
| Having an affinity or attraction to fat and oils (oil-loving). | Lipophilic |
| Chemical reaction in which the oxidizing agent is reduced and the reducing agent is oxidized. | Redox |
Created by:
mztina216