reactivity

Question 1

what is the order of most reactive to least reactive metals/gases

Answer 1

•potassium
•sodium
•lithium
•calcium
•magnesium
•aluminium
•carbon
•zinc
•iron
•hydrogen
•copper
•silver
•gold

Question 2

which metals react most violently with water

Answer 2

group 1 metals:
•potassium
•sodium
•lithium
(float on water, melt/disappear and form a ball of molten metal, lots of bubbles/fizzing (hydrogen))

Question 3

what is the flame test colour for potassium

Answer 3

lilac

Question 4

what is the flame test colour for sodium

Answer 4

yellow

Question 5

what is the flame test colour for lithium

Answer 5

red

Question 6

what is the flame test colour for calcium

Answer 6

orange/red

Question 7

what is the flame test colour for copper

Answer 7

blue/green

Question 8

explain why the the more shells an atoms has the more reactive the metal is

Answer 8

the further the outer electron is from the nucleus, the weaker electrostatic attraction between the nucleus and the outer electron, so electron is lost more easily

Question 9

describe the reaction of the group 2 metals (calcium and magnesium) when reacting with water

Answer 9

calcium - fairly vigorous reaction/reacts less strongly with water
magnesium - reacts very slowly with water