atomic structure- transition elements

Question 1

properties of alkali metals (group 1 )

Answer 1

• soft metals (can be cut with scalpel)
  -relatively low melting points
  -low density
  -react rapidly with oxygen, chlorine and water
  -form ions with 1 positive charge

Question 2

properties of transition elements

Answer 2

-hard and strong metals
-high melting points (except mercury, liquid at room temp)
-high density
-much less reactive than group 1 metals e.g with oxygen, chlorine and water
-can forms ions with different charges
-form coloured compounds
-useful as catalysts

Question 3

what colour is iron (III) oxide?
manganese (II) chloride?
chromium (III) chloride?
copper (II) sulfate?

Answer 3

red
pink
purple
blue