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Definition
| Anything that has mass and takes up space |
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| building blocks of matter |
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| Made of the same kind of atom |
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| made of two or more different kinds of elements |
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Definition
- uniform throughout
- if it has a variable composition then it is a homogeneous mixture
- no variable composition=pure substance
- if it can be separated into simpler substances= compound
- if not=element
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Term
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Definition
- can be observed with out changing a substance into another substance
- ex. boiling point, density, mass, volume
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- can only be observed when a substance is changed into another substance
- ex. flammability, corrosiveness, reavtivity with acid
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- Independent of the amount of the substance that is present
- ex. Density, boiling point, color
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- depend upon the amount of the substance present
- ex. mass, volume, energy
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Definition
- changes in matter that do not change the composition of substance
- ex. Changes of state, temp, volume etc
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- changes resulting in a new substance
- combustion, oxidation, decomposition
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Definition
| solid substances are separated from liquids/solutions |
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| uses difference in the boiling points of substance to separate a homogeneous mixture into its components |
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| separates substances on the basis of difference solubility in a solvent |
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Definition
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Term
| temperature conversion equation |
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Definition
- K=C+273.15
- F=9/5(C) + 32
- C=5/9(F-32)
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Term
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Definition
- when adding or subtracting, answers are rounded to the least sig decimal place
- multiplying or dividing answers are rounded to the number of digits that corresponds to the least number of sigfigs used
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Definition
| prosimity of a measurement ot the true value of a quantity |
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Term
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Definition
| prosimity of several measurements to each other |
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