Chap. 3 – Chemistry – Flashcards

soild matter that has atoms or molecules that d/n have long range order

                                  pg.55

tiny particles too small to see

                                          pg.54

the ammount of energy required to raise the temperature of 1g of water 1 degree C.

                                                              pg. 65

equal to 1000 cal

                                          pg.65

scale often used by scientists. h2o freezes at 0 C and boils at 100 C

                        pg.68

matter does change it's composition

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energy associated with potential chemical changes that can move or heat other objects

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those that a substance displays only through changing it's compostion

pg.59

the process by which one or more substances transform into differnt substances via a chemical change. often they omit or absorb energy

pg.

a substance composed of two or more elements in fixed definite proportions

pg.57

pushing more atoms and molecules into the same space

                                          pg.56

solid matter in which case it's atoms or molecules arrange in geometric patterns w/ long range, repeating order

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pg.55

carefully pouring off

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;pg.63

a process in which the mixture is heated to boil off more volatile liquid

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pg.63

energy associated w/ the flow of electrical charge

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pg.65

a substance that cannot be broken down into simpler substances

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pg.56

chemical reactions that absorb energy from their surroundings as they occur

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pg.67

chemical reactions that release energy

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pg.

used in the U.S. h2o freezes at 32 degrees and boils at 212 degrees

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pg

a method used to seperate a solid and a liquid mixture by pouring mixture through filter paper into a funnel

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pg.63

free to move relative to one another, indefinite shape and;volume and compressible

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pg.56

is the quantity of thermal energy required to change the temp of a given substance by 1 degree Celsius

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pg. 71

ex: oil and h2o

the composition varies from one region to another

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pg58

have uniform compositions the atoms and molecules mix uniformly

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pg.58

avoids negative temperature by assigning 0 Kelvin to the coldest temp. possible

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pg.68

3.60 x 10^6 joules.

used in electric bills

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pg.65

energy associated with its motion

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pg. 65

energy can neither be created nor destroyed

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pg.65

free to move relative to one another. Atoms close together. Shape indefinite, volume definite and liquid is imcompressible

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pg.56

anything that occupies space and hass mass

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pg.53

two or more differnt types of atoms or molecules combined in variable proportions

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pg. 56

two or more atoms joined together by bonds

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pg.54

matter changes its appearance not it's composition

pg.60

those that a substance displays w/out changing its composition

pg.59

energy associated with position

pg.65

substances that present after the chemical reaction

pg.60

characteristics used to distinguish one substance from another

pg.59

composed of only one type of molecule or atom

pg56

substances present before the chemical change in a chemical reaction

pg.60

oscillates/ vibration about a fixed point

pg.56

the heat capacity of a substance in joules per gram degree celsius

pg.71

solid, liquid, gas

pg.54

easily vaporizable

pg.63