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Chem I > Conversions > Flashcards

Conversions Flashcards

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1
Q

Kilo

A

K = 10^3

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2
Q

Centi

A

C = 10^-2

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3
Q

Milli

A

M = 10^-3

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4
Q

Micro

A

10^-6

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5
Q

Nano

A

n = 10^-9

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6
Q

Pico

A

p = 10^-12

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7
Q

Multiplying the same base with exponents

A

Add the exponents

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8
Q

Dividing the same base with exponents

A

Subtract the exponents

10^m/10^n = 10^m-n

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9
Q

Number with a negative exponent

A

1/10^n

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10
Q

Number with an exponent (10^n)

A

1/10^-n

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11
Q

Define substance

A

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

Ex: water, table sugar, ammonia, gold…

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12
Q

Define mixture

A

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

Ex: air, soft drink, milk…

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13
Q

Define homogeneous mixture

A

Composition of the mixture is the same throughout

Ex: dissolving sugar in water

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14
Q

Define heterogeneous mixture

A

Composition is not uniform

Ex: sand mixed with iron filling

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15
Q

Define element

A

A substance that cannot be separate into simpler substances by chemical means

There are 118 elements

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16
Q

Define compound

A

A substance composed of atoms of two or more elements chemically united in fixed proportions

Can be separated

17
Q

Three states of matter

A
  • gas
  • liquid
  • solid
18
Q

Define a physical property

A

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

Ex: melting point of ice

19
Q

Define chemical property

A

To observe this property we must carry out a chemical change

20
Q

Extensive properties

A
  • volume
  • mass
  • size
  • weight
  • length
21
Q

Intensive properties

A
  • boiling point
  • color
  • temperature
  • luster (light interacting with surface)
  • hardness
22
Q

Density formula

A

Mass divided by volume

23
Q

Giga

A

G = 10^9

24
Q

Mega

A

M = 10^6

Chem I (11 decks)

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