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Flashcards in module 16 Deck (21)
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1

oxidation number

the CHARGE that an ATOM in a molecule would develop IF the most ELECTRONEGATIVE ATOMS in the molecule TOOK the SHARED ELECTRONS from the LEST ELECTRONEGATIVE atoms

2

the sum of all oxidation numbers in a molecule must

equal the charge of that molecule

3

when a substance has only one type of atom in it, the oxidation number for that atom is equal to

charge of the substance/ # atoms present

4

group 1A metals always have oxidation numbers of

+1 when in molecules with more than 1 type of atom

5

group 2A metals always have oxidation numbers of

+2 when in molecules with more than 1 type of atom

6

Flourine always has a oxidation number of

-1 when in a molecule with more than one type of atom

7

when grouped with just one other atom which is metal, H has an oxidation number of -; in all other cases in which it is grouped with other atoms it is-

-1
+1

8

oxygen has an oxidation number of -- when in molecules with more than 1 type of atom

-2

9

if all else fails, assume that the atom's oxidation number is the same as

what it would take on in an ionic compound

10

oxidation

the process by which an atom LOSES electrons

11

reduction

the process by which an atom GAINS electrons

12

when a redox reaction occurs, there will always be

one atom that is oxidized and one that is reduced

13

anode

the negative side of the battery

14

anions

negative ions in a battery

15

cathode

positive side of a battery

16

cations

positive charges in a battery

17

Galvanic cell

the setup of a battery

18

electrodes

the metal strips in a battery setup
form the electrical contact between the wire and the contents of the beakers

19

lead-acid battery

battery used in a car

20

dry cell

a battery (like for flashlight) that does not have any aqueous solutions in it

21

alkaline cell

specific type of dry cell used in flashlight battery, in which the salt bridge is made from KOH a base