Chemistry Reference
In-Depth Information
Fig. 10.26 Molecular models, structural and half structural symbols (some examples)
Phosphorus (s, yellow)
+
Oxygen (g)
Phosphorus oxide (s, white); exothermic
+
1 P
4
5 O
2
1 P
4
O
10
D
H
<0
Fig. 10.27 Model for regrouping of molecules in the phosphorus-oxygen reaction
this scheme is Avogadro's law: equal-sized boxes in the model drawing depict equal
volumes of gas, the same number of molecule symbols in the boxes depicts the same
number of molecules in the volume parts of the involved gases.
