It is appropriate for us to contemplate the growth of understanding of chemical kinetics which has taken place since the time of Planck. Understanding starts with the recognition by Stark in 1908 of ...

Fundamental principles and concepts of chemistry, including stoichiometry; thermochemistry; atomic and molecular structure; solution chemistry, including acid-base chemistry; quantum theory; bonding ...

A reusable hot pack made of a supersaturated sodium acetate solution that crystallizes spontaneously once triggered by a metal piece releases heat. A balloon filled with hydrogen gas also releases ...