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20 Cards in this Set
- Front
- Back
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conversion factor
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A factor used to convert between two separate units; a conversion factor is constructed from any two quantities known to be equivalent.
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decimal part
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One part of a number expressed in scientific notation
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density
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A fundamental property of materials that relates mass and volume and differs from one substance to another. The units of density are those of mass divided by volume, most commonly expressed in g/cm^3, g/mL, or g/L.
Density = Mass / Volume D=m/v |
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English system
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A unit system commonly used in the United States
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exponent
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A number that represents the number of times a term is multiplied by itself. For example, in 2^4 the exponent is 4 and represents 2 x 2 x 2 x 2.
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exponential part
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One part of a number expressed in scientific notation; it represents the number of places the decimal point has moved.
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International System (SI)
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The standard set of units for science measurements, based on the metric system.
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kilogram
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(kg)
The SI standard unit of mass. |
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mass
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A measure of the quantity of matter within an object.
mass = density * volume m = d / v |
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meter
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(m)
The SI standard unit of length. |
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metric system
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The unit system commonly used throughout most of the world.
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prefix multipliers
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Prefixes used by the SI system with the standard units. These multipliers change the value of the unit by powers of 10.
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scientific notation
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A system used to write very big or very small numbers, often containing many zeros, more compactly and precisely. A number written in scientific notation consists of a decimal part and an exponential part (10 raised to a particular exponent).
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second
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(s)
The SI standard unit of time |
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SI units
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The most convenient system of units for science measurements, based on the metric system. The set of standard units agreed on by scientists throughout the world.
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significant figures
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The non-place-holding digits in a reported measurement; they represent the precision of a measured quantity.
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solution map
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a visual outline that shows the strategic route required to solve a problem
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units
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Previously agreed-on quantities used to report experimental measurements. Units are vital in chemistry.
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volume
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A measure of space. Any unit of length, when cubed, becomes a unit of volume.
volume = mass / density v = m/d |
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derived unit
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formed from other units
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