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| the study of the comparison, structure, properties, and reactions of matter, happens all around us every day |
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| all the substances that make up our world |
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| the study of the composition, properties, and reactions of matter |
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| the study of substances that contain the element carbon |
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| the study of the chemical reactions that take place in biological systems |
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| a substance that always has the same composition and properties wherever it is found, substance and chemical are often used interchangeably, everything around us is composed of one or more chemicals |
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| meter (m), 39.4 inches which is slightly longer than a yard, 2.54 cm in one inch |
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| the amount of space a substance occupies, liter (L), cubic meter (m3), 1000 ml in one L, liter is slightly larger than a quart |
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| a measure of the quantity of material it contains, unlike weight it does not depend on gravity, gram (g), kilogram (kg) |
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| degree Celsius (*C), kelvin (K), on the Celsius scale water freezes at 0 *C and boils at 100 *C, 32 *F and 212 *F, lowest temperature on Kelvin scale is 0 |
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| in chemistry, we use metric and SI units for length, volume, mass, temperature, and time |
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a form of writing large and small numbers using a coefficient that is at least 1 but less than 10, followed by a power of 10, includes unit of measurement
100,000 = 1 x 10 to the fifth power |
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| found by moving decimal over to the left until there is a coefficient at least 1 but less than 10 |
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| you find the power of 10 by counting the number of times the decimal point is moved to the left, when a number less than 1 is written in scientific notation, the power of 10 is a negative number and decimal is moved to the right |
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| unit of length in the metric system, 2.54 cm = 1 inch |
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| a ratio in which the numerator and denominator are quantities from an equality or given relationship, for example, the conversion factors for the relationship 1 kg = 2.20 lb are written: 2.20 lb/1 kg and 1 kg/2.20 lb |
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| cubic centimeter (cm3 or cc) |
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| the volume of a cube that has 1 cm sides, 1 cc = 1 mL |
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| the relationship of the mass of an object to its volume expressed as grams per cubic centimeter (g/cm3), grams per milliliter (g/mL), or grams per liter (g/L) |
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| a relationship between two units that measure the same quantity |
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| a number obtained by counting or by definition |
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| metric mass of 1000 g and equal to 2.20 lb, SI standard unit of mass |
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| a number obtained when a quantity is determined by using a measuring device |
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| the part of the name of a metric unit that precedes the base unit and specifies the size of the measurement, all prefixes are related on a decimal scale |
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| significant figures (SFs) |
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| the numbers recorded in a measurement |
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| a relationship between the density of a substance and the density of water, = density of sample/density of water |
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