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37 Cards in this Set
- Front
- Back
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matter
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anything that has mass and takes up space
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miscible
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substances that mix evenly together
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states of matter
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solid, liquid, gas
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suspension
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heterogeneous mixture containing a liquid in which visible particles
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density
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amount of matter contained in an object
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density units
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g/cm3
g/mL |
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volume
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how much space an object takes up
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volume units
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mL
cm3 |
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immiscible
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substances that cannot mix evenly
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mass
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how much matter in an object
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mass units
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grams
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compound
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the atoms of two or more elements are combined in a fixed proportion
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element
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all atoms in a substance have the same identity
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chemical formula
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represents a compound or element
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chemical property
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characteristic of a substance that indicates whether it can undergo a certain chemical change
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chemical change
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new substance is formed
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physical property
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any characteristic of a material that you can observe without changing the identity of the substance that make up the material
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physical change
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change in shape, size, or state of matter
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homogeneous
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evenly mixed throughout, a solution
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heterogeneous
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unevenly mixed, can distinguish particles
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law of conservation of matter
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you can not add or take away matter
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temperature
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measurement of how warm or cold something is
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difference between property and change
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property-something you observe, can happen to it, measurement
chemical-happens during an experiment |
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examples of physical change
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boiling, melting, tearing, freezing, condensation
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examples of chemical change
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bubbles, smell, rusting, color change
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examples of physical properties
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color, shape, size, density, melting point, boiling point
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examples of chemical properties
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flammable, change if exposed to light
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dissolving a physical or chemical change?
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physical-you are not changing the chemical composition of the substance
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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; mass is not created or destroyed
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temp. ________ _______ during a phase change
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doesn't change
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an object's density determines its ________
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buoyancy
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_____ objects float in ______dense objects
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less, more
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the only way to prove a chemical change is that a _____ ___________ is formed
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new substance
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distillation
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the process of separating substances in a mixture by evaporating a liquid and re condensing its vapor
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how can you use a physical change to separate substances?
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1)liquid from liquid by the different boiling points
2)distillation |
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mixture
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a material made up of two or more substances that can easily be separated by physical means-2 or more substances
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pure substances
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type of matter with a fixed composition
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