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15 Cards in this Set
- Front
- Back
Chemical change –
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matter undergoes a chemical reaction and forms a new substance
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Chemical properties –
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the potential chemical reaction a substance can undergo ex: flamabitlity, rust, explosiveness
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Physical change –
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matter trasformes in a way that it does not alter its chemical identity ex: solid to liquid, liquid to gas
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Physical properties –
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can be measures without altering the chemical identity of a substance. Ex: color, melting point, boiling point, odor, refractive index, hardness, texture etc.
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Mass –
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measure of how much matter is contained in the sample
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Weight –
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measure of how strongly gravity is pulling on matter
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Unit –
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critical information about system of measurement ad whether the base unit is modified with a prefix indicating the sample size
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Conversion factor –
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an equality by which a quantity is multiplied to convert the original units of the quantity to the new units that are desired
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Significant figures
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All digits known exactly for a experimental measurement plus one digit that is an estimate
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Scientific notation
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A method of writing figures in terms of power of ten
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Accuracy
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How close experimental measurements are to the real value
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Precision
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The reproductibility of a measurement
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Density
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The ratio of mass to volume
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Sink float method
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A method for measuring the density of glass
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Density gradient method
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A method of soil analysis
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