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15 Cards in this Set
- Front
- Back
Substance
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an element or a compound
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Element
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if all the atoms in a substance are alike
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Compound
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a substance in which the atoms of two or more elements are combined in a fixed proportion
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Heterogeneous mixture
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a mixture in which different materials can be distinguished easily
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Homogeneous mixture
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contains two or more substances blended throroughly throughout
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Solution
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a homegenous mixture of particles so small that they cannot be seen with a microscope and will never settle to the bottom of their container
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Colloid
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a type of mixture that never settles
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Tyndall effect
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scattering of light by colloidal particles
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Suspension
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a heterogeneous mixture containing a liquid in which visible particles never settle
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Physical property
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any characteristic of a material that you can observe or attempt to observe without changing the identity of the substances that make up the material
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Physical change
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a change in size, state, or shape of matter
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Distillation
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a process of seperating substances in a mixture by evaporating a liquid and recondensing its vapor
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Chemical Property
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a characteristic of a substance that indicates whether it can undergo a certain chemical change
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Chemical change
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a change of one substance to another
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Law of conservation of mass
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the mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change
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