Alkali Metals and Halogens Flashcards
1
Q
What is the balanced symbol equation of the reaction between potassium and oxygen in air
A
4K + O2 -> 2K2O
2
Q
What is the balanced symbol equation for the reaction between water and potassium
A
2K + 2H2O -> 2KOH + H2
3
Q
What is the trend for reactivity in group 1
A
More reactive down the group
4
Q
What is the reactivity trend in group 7
A
More reactive up the group
5
Q
What happens to alkali metals in air and what does that do to their appearance
A
They corrode in oxygen and turn dull
