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AP Chemistry > Chapter 1 > Flashcards

Chapter 1 Flashcards

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0
Q

Substance

A

A form of matter that has a constant composition and distinct properties

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1
Q

Matter

A

Anything that occupies space and has mass

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2
Q

Mixture

A

Combination of two or more substances in which the substances retain their distinct identities

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3
Q

Homogeneous mixture

A

Composition is the same throughout

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4
Q

Heterogenous mixture

A

Composition is not uniform

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5
Q

Element

A

Cannot be separated into simpler substances by chemical means

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6
Q

Compound

A

Substance composed of atoms of two or more elements chemically united in fixed portions

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7
Q

S

A

Pure solid

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8
Q

l

A

Pure liquid

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9
Q

g

A

Pure gas

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10
Q

aq

A

Aqueous mixture

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11
Q

Physical property

A

Can be measured and observed without changing the composition or identity of a substance

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12
Q

Chemical property

A

To observe we must carry out a chemical change

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13
Q

Extensive property

A

Depends on how much matter is being considered

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14
Q

Mass

A

The quantity of matter in a given sample of the substance

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15
Q

Volume

A

Length cubed

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16
Q

Intensive property

A

Does not depend on how much matter is being considered

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17
Q

Density

A

The mass of an object divided by its volume

18
Q

Macroscopic properties

A

Can be determined directly

19
Q

Microscopic properties

A

On the atomic or molecular scale must be determined by an indirect method

20
Q

SI

A

International system of units

21
Q

Length

A

Meter

m

22
Q

Mass

A

Kilogram

kg

23
Q

Time

A

Second

s

24
Q

Electrical current

A

Ampere

A

25
Q

Temperature

A

Kelvin

K

26
Q

Amount of substance

A

Mole

mol

27
Q

Luminous intensity

A

Candela

cd

28
Q

Tera-

T

A

10^12

29
Q

Giga-

G

A

10^9

30
Q

mega-

M

A

10^6

31
Q

kilo-

k

A

10^3

32
Q

deci-

d

A

10^-1

33
Q

Centi-

c

A

10^-2

34
Q

milli-

m

A

10^-3

35
Q

Micro-

Weird u

A

10^-6

36
Q

nano-

n

A

10^-9

37
Q

pico-

p

A

10^-12

38
Q

Weight

A

The force that gravity exerts on an object

39
Q

Liter

A

Volume occupied by one cubic decimeter

40
Q

Significant figures

A

The meaningful digits in a measured or calculated quantity

41
Q

Accuracy

A

How close a measurement is to the true value of the quantity that was measured

42
Q

Precision

A

How closely two or more measurements of the same quantity agree with one another

AP Chemistry (2 decks)

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