Chemical Compounds (Leaving Cert Chemistry): Quizzes

Chemical union of 2+ elements

Chemical bonds

To attain stable electron config

Combining power of an element

4

+1 and +2

Iron(II) or ferrous

$Cr³⁺$

Powerful oxidising agent

Close energy levels of s & d orbitals

Lighter than air & non-flammable

Protects molten metal from $O₂$ & $N₂$

8

Atoms want 8 e⁻ in outer level

$Ca²⁺$ needs 2 $Cl⁻$ to balance charge