Group 2 Flashcards
(17 cards)
Colour of Ca flame
Red/orange
Colour of Sr flame
Red
Colour of Barium flame
Pale green
How soluble is MgOH
Sparingly soluble
How soluble is BaOH
Soluble
How soluble is CaOH
Slightly soluble
How soluble is SrOH
Soluble
Reaction of CaCO3 and HCL
Produces
CaCl2
H20
CO2
State of Magnesium oxide
White solid
Trend in reactivity with oxygen as you go down group
Increase
Less energy needed in 1st and 2nd IE (more shielding)
Why is radium not used
Radioactive metal
State of Calcium oxide
White solid
Gas produced when reacting with water
Hydrogen
Indicator colour of Sr and Ba when reacting with water
Purple
as concentration of OH goes up
More soluble
State of Sr
White solid
What is a displacement reaction
Where a more reactive element
displaces a less reactive element
From solution of latter’s ions
Colour of Mg flame
Yellow
