metals and non-metals

Question 1

non-lustrous metal

Answer 1

sodium Na

Question 2

metals that can be cut with a knife

Answer 2

Na, Li, K

Question 3

most ductile metal

Answer 3

gold

Question 4

good conductors (metals)

Answer 4

silver, copper

Question 5

poor conductors (metals)

Answer 5

lead, mercury

Question 6

metal in liquid form

Answer 6

mercury, gallium

Question 7

lustrous non metal

Answer 7

iodine

Question 8

hard non metal

Answer 8

diamond

Question 9

conducting non metal

Answer 9

graphite

Question 10

which metals react vigorously; where are they kept

Answer 10

K and Na ; in kerosene so they dont catch fire

Question 11

metals which react w/ cold water

Answer 11

Na, K, Ca

Question 12

metals which react w/ hot water

Answer 12

Mg

Question 13

metals which do not react w/ water

Answer 13

Pd, Cu, Au, Ag

Question 14

metals which react w/ steam

Answer 14

Al, Fe, Zn

Question 15

Reactivity series

Answer 15

K Na Ca Mg Al Zn Fe Pb [H] Cu Hg Au Ag

Question 16

what are amphoteric oxides?

Answer 16

metal oxides which react with both acids and bases to form salts

Question 17

what is anodising

Answer 17

process of forming a thick oxide layer of aluminum

Question 18

Metal + Oxygen

Answer 18

Metal Oxide

Question 19

Metal + water

Answer 19

metaloxide + hydrogen

Question 20

metaloxide + water

Answer 20

metal hydroxide

Question 21

metal + acid

Answer 21

salt + hydrogen gas

Question 22

Metal carbonate / hydrocarbonate + acid

Answer 22

salt + co2