6.3 + 6.4 + 6.5 Flashcards Preview

Chem 100 > 6.3 + 6.4 + 6.5 > Flashcards

Flashcards in 6.3 + 6.4 + 6.5 Deck (15):
1

oxidation reduction reaction

transfer of electrons from one substance to another

2

oxidation

process of losing electrons

3

reduction

process of gaining electrons

4

what role does oxidation play in biological systems?
(think hydrogen and oxygen)

oxidation may involve loss of Hydrogen or
gain of Oxygen

5

what role does reduction play in biological systems?
(think hydrogen and oxygen)

reduction may involve gain of Hydrogen or
loss of Oxygen

6

does oxidation and reduction occur separately or simultaneously?

simultaneously

7

mole

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

8

Avogadro's number

6.02 x 10^23

9

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

6.02 x 10^23

10

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

6.02 x 10^23

11

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

6.02 x 10^23/1 mole
1 mole/6.02 x 10^23

12

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

the subscript,
so F2= 2 moles of fluorine

13

molar mass

mass of one mole of a substance

14

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

the atomic mass

15

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

tenths
(.1g)