Announcement: Scientific explanations of some Natural Phenomena

In the Introduction of this Series of Problems and Solutions, Chemistry has been defined as the Science related to the Study and Observation of Matter that we find in our environment and interact with in our daily life; the study of the interaction between matters themselves and interaction between matter and energy, etc.…. Every day of our life we observe different natural or non-natural phenomena; as someone who is interested about Science and particularly Chemistry and its relationship with our environment, you must be interested about the scientific explanation of those phenomena.

In the next series of problems and questions, a certain number of common natural phenomena will be explained.