Energy and the first law of thermodynamics
Eating ice cream soon causes the mouth to get cold, possibly to…
First electron affinity and reactivity
Gases such as helium, neon and argon are so unreactive that we…
Properties of covalent compounds
Clear petroleum gel is a common product, comprising a mixture of simple…
Breaking bonds requires an input of energy
A plant accumulates nutrients from the soil as it grows. Such accumulation…
Elastic and inelastic collisions
In the previous example, we looked at the interactions induced when changing…
How is ammonia liquefied?
Compressing ammonia gas under high pressure forces the molecules into close We…
