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41 Cards in this Set
- Front
- Back
____ deals with the composition, structures, and properties of matter and how matter changes under different conditions. |
Chemistry |
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In order to be considered organic, a substance must contain: |
Carbon |
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Metal is an example of what? |
Inorganic substance |
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Any substance that occupies space and has mass is considered ____. |
Matter |
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The simplest form of chemical matter is called what? |
Element |
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H stands for which element? |
Hydrogen |
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The structural units that make up the elements are called: |
Atoms |
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How many atoms are in a molecule? |
Two or more |
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What is the chemical formulas for ozone? |
O³ |
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All ____ exists as a solid, liquid, or gas. |
Matter |
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Gases have an ____ shape and volume. |
Indefinite |
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Characteristics that can only be determined by a chemical reaction and a chemical change in the substance are called _____. |
Chemical properties |
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Size, hardness, and gloss are all examples of _____. |
Physical properties |
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When water freezes and becomes ice, it undergoes _____. |
Physical change |
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____ is an example of a chemical change, the hardening of an artificial nail product, and/or an example of an exothermic reaction. |
Polymerization (polymer) |
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A ____ is a chemical combination of matter in definite proportions. |
Pure substance |
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A _____ is a stable uniform blend of two or more substances. |
Solution |
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What is the universal solvent? |
Water |
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If two liquids are incapable of being mixed into a stable solution, they are considered ____. |
Immiscible |
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Solutions contain ____ that are invisible to the naked eye. |
Particles |
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_____ contain less miscible particles than solutions. |
Suspensions |
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An ____ is an unstable mixture of two or more substances that normally will not stay blended without the aid of a binder. |
Emulsion |
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_____ usually separate very slowly over time. |
Emulsion |
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The head of a surfactant molecule is ____. |
Hydrophilic |
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In a _____, droplets of water are surrounded by surfactants with their hydrophilic heads pointing in. |
Water-in-oil emulsion |
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Ointments, paste, and styling waxes are made from a combination of: |
Petroleum, oil, and wax |
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____ is oily. |
Glycerin |
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____ are less greasy than other oils. |
Silicones |
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Volatile organic compounds contain ____ and evaporate quickly. |
Carbon |
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What causes an atom to split in two? |
Ionization |
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What is an anion? |
Negative charge (Ion with a negative electrical charge) |
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What is the pH of pure water? |
7 |
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Only products that contain ____ can have a PH. |
Water |
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Pure water is equally: |
Equally alkaline and acidic |
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pH of 5 is ___ times more ____ than a pH of 6 |
10 -- acidic |
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Alkalis turns litmus paper from: |
Red to blue |
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Lye (sodium hydroxide) is a _____. |
Very strong alkali used in drain cleaners in callous softeners |
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How many naturally occurring elements are there? |
90 |
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When you combine atoms you get ____. |
Molecules |
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What percentage of the human body is composed of chemicals? |
100% |
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What causes the physical form of matter to change? |
Temperature of matter |