Chapter 8 Flashcards
1
Q
What do Group 2 elements react with oxygen to form?
A
metal oxide - MO
2
Q
What do Group 2 elements react with water to form?
A
1) alkaline hydroxide - M(OH)₂
2) hydrogen gas - H₂(g)
3
Q
What do metals react with dilute acids to form?
A
salt + hydrogen
4
Q
Does the reactivity increase/decrease down Group 2?
A
increase
5
Q
Why does the reactivity increase down Group 2?
A
1) loss of electrons to form +2 ions
2) ionisation energies decrease down the group - attraction between nucleus + outer electrons decreases
6
Q
What do Group 2 oxides react with water to form?
A
hydroxide ions, OH⁻
