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16 Cards in this Set
- Front
- Back
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The science of the composition, structure, properties, and reactions of matter, especially of atomic and molecular systems.
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Chemistry
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A method of solving problems by observation; recording and evaluating data of an experiment; formulating hypotheses and theories to explain the behavior of nature; and devising additional experiments to test the hypotheses and theories to see if they are correct.
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Scientific Method
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A tentative explanation of certain facts to provide a basis for further experimentation.
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Hypothesis
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An explanation of the general principles of certain phenomena with considerable evidence to support it; a well-established hypothesis.
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Theory
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Simple statements of natural phenomena to which no exceptions are known under the given conditions.
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Scientific Laws
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Anything that has mass and occupies space.
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Matter
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A state of matter having a definite volume, whose particles cohere rigidly to one another, so that it can be independent of its container.
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Solid
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A solid without shape or form.
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Amorphous
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A state of matter in which the particles move about freely while the substance retains a definite volume.
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Liquid – Liquids flow and take the shape of their container.
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A state of matter that has no shape or definite volume so that the substance completely fills its container.
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Gas
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Matter that is homogenous and has a definite, fixed composition.
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Substance – Substances consist of 2 forms – as elements and as compounds.
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Matter that has uniform properties throughout.
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Homogenous
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Matter without a uniform composition – having 2 or more components or phases.
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Heterogeneous
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A homogenous part of a system separated from other parts by a physical boundary.
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Phase
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A body of matter under consideration.
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System
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Matter containing two or more substances, which can be present in variable amounts.
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Mixture – Mixtures can be homogeneous (sugar water) or heterogeneous (sand and water).
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