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31 Cards in this Set
- Front
- Back
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Chemistry |
Is the study of matter and the changes that it undergoes |
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Theory |
explanation that has supported many, many experiments. |
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Solid |
are formed of matter that have their own definite shape and volume. |
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Liquid |
are a form of matter that have a definite volume but take the shape of a container.
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Gas |
have no definite shape or volume. The expand to fill their container.
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Extensive Properties |
are dependent on the amount of substance present, such as mass length or volume (depends on what object you have)
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Intensive Properties |
are independent of the amount of substance present, such as density.
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Qualitative Data |
describes odor, color, shape, or any physical characteristic. |
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Quantitative Data |
is the numerical information such as how little or how big/how tall
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Scientific Law |
a relationship in the nature that is supported by many experiments.
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Matter |
anything that has mass or takes up space.
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Physical Change |
A change that alter a substance w/o changing its composition
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Mass |
the measurement that reflects the amount of matter.
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Weight |
A measure of amount of matter and also the effect of Earth's gravitational pull on that matter.
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Chemical Change |
a change that involves one or more substances turning into new substances |
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Chemical Properties |
when one substance change from one to another |
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Physical Properties |
is a characteristic that can be discovered or measured w/o changing the samples combustion
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Vapor |
refers to the gaseous states of a substance that is a solid or liquid at room temperature |
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Law of conservation mass |
states that mass is neither created nor destroyed in a chemical reaction, it is conserved. The mass of the reactants equals the mass of the products. |
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Filtration |
a separation method that separates a solid from a liquid. |
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Distillation |
a separation method that separates substance in a homogeneous mixture. |
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Crystallization |
a separation method that forms crystals from a homogeneous mixture. |
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Sublimation |
is the process of a solid changing directly to a gas. |
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Mixture |
is a combination of two or more pure substances. |
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Homogeneous mixture |
is a mixture where the composition is constant throughout. ex: Kool aid, one whole mixture. |
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Solutions |
homogeneous mixture |
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Heterogeneous mixture |
is a mixture where the individual substances remain distinct ( pizza) |
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Element |
is a pure substance that cannot be separated into simpler substances by physical or chemical means |
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Periodic table |
organizes the elements into a grid of horizontal rows called periods and vertical columns called groups |
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Compound |
made up of two or more elements combined chemically |
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Law of definite proportion |
states that a compound is always composed of the same proportion of elements by mass. |
