CHEM 460: CHEM 460

"Explore the intricate world of atomic masses using aluminum and chlorine as examples. Understand the concept of 'mole' and its relevance in chemistry. Learn to calculate masses of moles for elements based on atomic weights.

The scenario involves an archaeologist analyzing iron in an old building containing nickel-63, which has a known half-life of 92 years. With only 0.78% of the original nickel-63 remaining, the goal is to estimate the year when this discovery was made. We delve into the calculations and principles of first-order decay reactions.

We categorize elements into representative, transition, inner-transition, and noble gases based on their positions in the periodic table and general characteristics, without revealing specific element classifications.

In this video, we classify substances as elements, compounds, or mixtures, with air and soy sauce as mixtures, iron as an element, and table salt as a compound.

Explore the intricacies of hydrogen peroxide's Lewis structure and its bond characteristics. Understand the differences in bond lengths between H?O? and O?. Delve into the distinction between single and double bonds and their implications.