What are accounts for physical properties?

What type of reaction is represented by the following example? 2co2 (g) + 4h2o (l) + 1452 kj 2ch3oh (l) (g) + 3o2 (g) exothermic endothermic

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5