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Chemistry
Chapter 12
| Term | Definition |
|---|---|
| Atom | The basic unit of matter, with a nucleus at the center surrounded by negatively charged electrons that move around the nucleus in orbits, is a(n) __________. |
| 98 | There are ____naturally occurring elements, each with its own distinct physical and chemical properties. |
| Element | The simplest form of chemical matter that cannot be broken down without the loss of identity is a(n) |
| Lack carbon | A characteristic of all inorganic substances is that they_______ |
| Inorganic Chemistry | What is the study of substances that lack the element carbon, but may contain the element hydrogen? |
| Contain carbon and hydroen | All haircolor products are organic chemicals, they _________. |
| Organic Chemistry | The branch of science that applies to substances that contain carbon is called |
| Redox | What type of chemical reaction results in the oxidizing agent being reduced and the reducing agent being oxidized? |
| Chemical change | The oxidation of haircolor is an example of a ________ |
| Physical change | Change in the form of a substance that does not cause a chemical reaction is a(n) ___________ |
| Liquid | What state of matter has a definite volume but takes the shape of its container? |
| Compound molecule | Sodium chloride is an example of a(n) _______ |
| Compound | The chemical combination of two or more atoms of different elements produces a(n) |
| Molecule | Chemically combining two or more atoms produces a ________ |
| Miscible | Mutually soluble liquids that can be mixed together to form clear solutions are ________ |
| Solvent | A substance, usually liquid, that dissolves another substance to form a solution is a(n) ________ |
| Solution | A stable physical mixture of two or more substances in a solvent is a(n)_________ |
| Physical mixture | Air contains many substances, including nitrogen, carbon dioxide, and water vapor, and is an example of a ______ |
| Pure substance | A chemical combination of matter in definite (fixed) proportions is a __________ |
| Combustion | The rapid oxidation of substance, accompanied by the production of heat and light, is known as _______ |
| Exothermic | Chemical reactions that are characterized by giving off heat are _________ |
| Glycerin | A sweet, colorless, oily substance that is used as a moisturizer in skin and body creams is ______ |
| Alkanolamines | Substances used to neutralize acids or raise the pH of many hair products are _______ |
| Lipophilic | Having and affinity or attraction to fat and oils (oil-loving) is defined as _____ |
| Hydrophilic | Being capable of combining with or attracting water (water-loving) is defined as ______ |
| Surfactants | Substances that allow oil and water to mix, or emulsify, are |
| Emulsion | An unstable physical mixture of two or more immiscible substances is a(n) ______ |
| Ethyl alcohol | A common voltaile organic compound used in hair spray is _____ |
| Neutral | A solution with a pH value of seven indicates a(n) _____ solution |
| A Cation | An ion with a positive electrical charge is considered to be ______ |
| Ionization | What term refers to the separation of an atom or molecule into positive and negative ions? |
| Ion | An atom or molecule that carries an electrical charge is a(n) |