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20 Cards in this Set
- Front
- Back
What is a mixture?
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A mixture is a combination of two substances where each substance contains it's own identity.
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Homogeneous
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Applies to: Mixture
Matter that consists of a single phase. Hint: homo-same |
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Heterogeneous
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Applies to: Mixture
Matter that consists of more than one phase. Examples: sand, rocks, and wood. Hint: hetero-different |
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Define the characteristics of a substance.
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A substance can not be separated into simpler components by physical changes.
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Physical Changes
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A substance can change it's physical appearance but the chemical make-up of the substance will not change.
Examples of Properties: Boiling point melting point mass, volume, density. |
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Solutions
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homogeneous mixtures are called solutions.
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Solute
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something that is dissolved into a solvent.
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Solvent
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something that dissolves a solute.
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Extensive properties
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depend of mass and volume of a substance.
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Intensive properties
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do NOT depend on the amount of substance. Ex. density (density= mass/volume)
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Define: compound
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A compound is able to be separated into simpler substances. Contains two or more elements.
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Characteristics of nonmetals
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nonlustrous, poor conductors of electricity.
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Chemical bonds
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electrical forces of attraction that hold the particles of matter together.
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diatomic molecules
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two or more atoms that are held together to act as a single molecule.
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allotropes
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nonmetals that have multiple molecular forms.
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cation
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a positive ion
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anion
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a negative ion
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polyatomic ions
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several atoms connected to each other to form an ion.
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binary compound
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made up of only two elements
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ternary compounds
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made up of three or more elements
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