exam 3 some such

Question 1

what is a carbide

Answer 1

a carbon and a less electronegative element

Question 2

nonmetal oxides are usually

Answer 2

acidic

Question 3

metal oxides are usually

Answer 3

basic

Question 4

zinc oxide is

Answer 4

amphoteric

Question 5

which carbon allotropes have double/triple bonds

Answer 5

graphite and buckyball

Question 6

which carbon allotrope has only single bonds

Answer 6

diamond

Question 7

which elements are most likely to form pi bonds

Answer 7

elements at the top of the table

Question 8

what is the hack for sp3 hybridization to remember

Answer 8

if an atom has 4 single bonds or 3 single bonds and 1 lone pair, its sp3 hybridized

Question 9

pi bonds need

Answer 9

unhybridized p orbitals

Question 10

tritium undergoes …. decay

Answer 10

beta

Question 11

what are the reactants when lead battery is recharging

Answer 11

PbSO4

Question 12

if the ratio of neutrons to protons is too high, then ____ decay

Answer 12

beta

Question 13

if ratio of neutrons to protons is too low, then ___ decay

Answer 13

positron emission or electron capture

Question 14

in a hydrogen fuel cell, _____ is the reactant at the anode and ______ is the reactant at the cathode

Answer 14

H2, O2

Question 15

the products of electrolysis of water are

Answer 15

H2 and O2

Question 16

what 2 hydrogen isotopes fuse in the sun to make Helium

Answer 16

one deuterium (hydrogen-2) and one tritium (hydrogen-3)

Question 17

what are the reactants and products in a alkaline battery anode

Answer 17

Zn(s) and OH- (reac)

ZnO and H2O (Prod)

Question 18

what are the reactants and products in a alkaline battery cathode

Answer 18

MnO2 and H20 (reac)

Mn2O3 and OH- (prod)

Question 19

what are the reactants and products at the anode of a lead acid battery

Answer 19

Pb and HSO4 (reac)

PbSO4 and H+ (prod)

Question 20

what are the reactants and products at the cathode of a lead acid battery

Answer 20

PbO2 and HSO4 (reac)

PbSO4 (prod)