periodic table

Question 1

group 1 metal trends

Answer 1

• shiny
• soft
• low melting/boiling points
• low densities
  > down group = lower melting/boiling points
  > down group = higher reactivity
  > down group = softer

Question 2

group 2 metal trends

Answer 2

> down group = more reactive with water & oxygen

> no regular trends in density & melting/boiling points

Question 3

group 7 halogen trends

Answer 3

• poisonous
• diatomic
  > down group = higher melting/boiling points
  > down group = denser
  > down group = gas –> solid
  > down group = darker
  > down group = less reactive

Question 4

group 8 noble gas trends

Answer 4

• inert
• very low melting/boiling points
• mono atomic
• colorless
  > down group = higher density

Question 5

transition element characteristics

Answer 5

• high b.p. & m.p.
• strong / hard
• highly dense
• good conductors of heat / electricity
• form coloured compounds
• variable oxidation states
• high catalytic activity

Question 6

uses of transition metals

Answer 6

• catalysts
• medical/surgical applications
  (titanium due to high biocompatibility)
• dyes/paints
• stained glass
• jewelry