6.3 + 6.4 + 6.5 Flashcards

1
Q

oxidation reduction reaction

A

transfer of electrons from one substance to another

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2
Q

oxidation

A

process of losing electrons

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3
Q

reduction

A

process of gaining electrons

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4
Q

what role does oxidation play in biological systems?

think hydrogen and oxygen

A

oxidation may involve loss of Hydrogen or

gain of Oxygen

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5
Q

what role does reduction play in biological systems?

think hydrogen and oxygen

A

reduction may involve gain of Hydrogen or

loss of Oxygen

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6
Q

does oxidation and reduction occur separately or simultaneously?

A

simultaneously

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7
Q

mole

A

counting unit that represents same # of 12 g of carbon in carbon-12

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8
Q

Avogadro’s number

A

6.02 x 10^23

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9
Q

a mole of a covalent compound contains _____molecules. (Avogadro’s number)

A

6.02 x 10^23

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10
Q

A mole of a ionic compound contains _____molecules. (Avogadro’s number)

A

6.02 x 10^23

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11
Q

How do you write the equality of Avogadro’s number?

A

6.02 x 10^23/1 mole

1 mole/6.02 x 10^23

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12
Q

How do you determine the mole of elements in a formula?

A

the subscript,

so F2= 2 moles of fluorine

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13
Q

molar mass

A

mass of one mole of a substance

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14
Q

what can you use to determine the molar mass of a substance?

A

the atomic mass

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15
Q

how many places (after decimal) do you use when writing molar mass?

A

tenths

.1g

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