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15 Cards in this Set
- Front
- Back
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Definition of Chemistry?
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the study of the
structure and behavior of matter |
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what is a value?
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A measurement is always reported as a value, a quantitative
description that includes both a number and a unit. |
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What are units?
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quantities defined by standards that people have
agreed to use to compare one event or object to another |
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What are base units?
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all units of measurement are derived from this: meter, kilogram, second, kelvin, mole, ampere, and candela
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What is mass?
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The amount of matter in an object. Mass can also be defined as the property of
matter that leads to gravitational attractions between objects and therefore gives rise to weight. |
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Definition of Chemistry?
|
the study of the
structure and behavior of matter |
|
|
what is a value?
|
A measurement is always reported as a value, a quantitative
description that includes both a number and a unit. |
|
|
What are units?
|
quantities defined by standards that people have
agreed to use to compare one event or object to another |
|
|
What are base units?
|
all units of measurement are derived from this: meter, kilogram, second, kelvin, mole, ampere, and candela
|
|
|
What is mass?
|
The amount of matter in an object. Mass can also be defined as the property of
matter that leads to gravitational attractions between objects and therefore gives rise to weight. |
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What is weight?
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A measure of the force of gravitational attraction between an object and a significantly large object, such as the earth or the moon.
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What is matter?
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Anything that has mass and occupies space
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What is absolute zero?
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Zero kelvins (0 K), the lowest possible temperature, equivalent to -273.15 °C. It is the point beyond which motion can no longer be decreased.
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What is precision?
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The closeness in value of a series of measurements of the same entity. The
closer the values of the measurements, the more precise they are |
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What is accuracy?
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How closely a measured value approaches the true value of a property
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