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25 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Physical property or chemical property: iron metal rusts in an atmosphere of moist air |
Chemical property |
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Mercury metal is liquid at room temperature |
Physical |
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Nickel metal dissolves in acid to produce a light green solution |
Chemical |
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Potassium metal has a melting point of 63 degrees Celsius |
Physical |
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Solid |
Definite shape and definite volume |
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Liquid |
Indefinite shape, definite volume |
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Gas |
Indefinite shape,indefinite volume |
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The fashioning of a piece of wood into a round table leg involves a ________ change |
Physical |
Still wood |
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The vigorous reaction of potassium metal with water to produce hydrogen gas is a _________ change |
Chemical |
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Straightening a bent piece of iron with a hammer is an example of a ___________ change |
Physical |
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The ignition and burning of a match involve a __________ change |
Chemical |
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Pure substance |
Kind of matter that cannot be separated into other kinds of matter by any physical means |
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Mixture |
Physical combination of two or more pure substances in which each substance retains its own chemical identity |
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Heterogenous mixture |
Contains visibly different phases (parts) |
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Homogenous mixture |
Contains only one visibly distinct phase (part) example: salt water |
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Pure substance or mixture? A pinch of table salt, one quart of water |
homogenous Mixture |
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A pinch of black pepper, one quart of water
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Heterogenous mixture |
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One substance present, one phase present |
Pure substance |
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Two substances present, same properties throughout |
Homogenous mixture |
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Element |
Cannot be broken down into simpler substances by chemical or physical means |
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Compound |
Can be broken down into elements by chemical but not physical means. Example: H2O |
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Exact number |
Value has no uncertainty |
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In exact number |
Has uncertainty |
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Periods |
Horizontal rows of elements |
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Groups |
Vertical columns of elements that have similar chemical properties |
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