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| an observation of natural phenomena carried out in a controlled manner so that the results can be duplicated and rational conclusions obtained |
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| a concese statement or mathematical equation avout a fundamental relationship or regularity of nature |
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| a tentative explanation of some regularity of nature |
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| tested explanation of basic natural phenomena |
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| whatever occupies space and can be perceived by our senses |
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| Law of conservation of Mass |
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| the total mass remains constant during a chemical change (chemical reaction) |
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| the form of matter characterized by rigidity |
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| the form of matter that is a relatively incompressible fluid |
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| the form of matter that is an easily compressible fluid |
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| a change in the form of matter but not in tis chemical identity |
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| a change in which one or more kinds of matter are transformed into new matter or several new kinds of matter |
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| a characteristic that can be observed for a material without changing its chemical identity |
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| a characteristic of a material involving its chemical change |
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| a kind of matter that cannot be separated into other kinds of matter by any physical process |
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| a substance that cannot be decomposed by any chemical reaction into simpler substances |
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| a substance composed of two or more elements chemically combined. |
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| law of definite proportions (law of constant composition) |
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| a pure compound whatever its source, always contains definite or constant proportions of the elements by mass |
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| a material that can be separated by physical means into tow or more substances |
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| a mixture that consists of physically distinct parts each with different properties |
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| homogeneous mixture (solution) |
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| a mixture that is uniform in its properties throughout given samples |
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| refers to the closeness of the set of values obtained from identical measurements of a quantity. |
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| the closeness of a single measurement to its true value |
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| those digits in a measured number (or result of a calculation with measured number0 that include all certain digits plus a final on having some uncertainty |
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| the nuber of digits reported for the value of a measured or calculated quantity, indicating the precision of a value |
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| the representation of a number in the form A x 10n where A is the number with a single nonzero digit to the left of the decimal point and n is an integer, or whole number. |
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| a number that arises when you count items or sometimes when you define a unit. |
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| the procedure of dropping non-significant digits in a calculation result and adjusting the last digit reported |
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| the SI units from which all others can be derived |
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| a prefix used to indicate a power of ten |
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| the SI base unit for length |
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| the temperature scale in general scientific use. |
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| absolute temperature scale |
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| a unit of volume equal to a cubic meter |
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| mass per unit volume d=m/v |
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| the method of calculation in which one carries along the units for quantities |
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| a factor equal to 1 that converts a quantity expressed in one unit to a quantity expressed in another unit |
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| an explanation of the structure of matter in terms of different combination of very small particels |
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| an extremely small particle of matter that retains its identity during a chemical reaction. |
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Definition
| a type of matter composed of only one kind of atom |
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Definition
| a type of matter composed of only one kind of atom |
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Definition
| a type of matter composed of atoms of two or more elements chemically combined in fixed proportions |
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