Chemistry Lecture Notes Review

A series of flashcards based on key concepts from the chemistry lecture notes to aid in exam preparation.

What is the key characteristic of exothermic reactions?

Exothermic reactions release heat, resulting in temperature increase.

What do we call a reaction that results in gas formation?

Gas-forming reaction.

What is the purpose of using a solubility table in precipitation reactions?

To determine whether a solid will form.

What are net ionic reactions?

Simplified reactions that include only the reactant ions that form the product.

What is a combination or synthesis reaction?

A reaction where two or more reactants combine to form a single product.

What occurs in oxidation-reduction (redox) reactions?

Electrons are exchanged between reactants.

Explain the concept of quantized energy levels in an atom.

Electrons can only occupy specific energy levels and not between them.

What happens when an electron relaxes from an excited state?

The absorbed energy is released as light.

How many electrons can occupy an orbital?

A maximum of 2 electrons can occupy each orbital.

What does the electronegativity difference of 0.4 or greater indicate?

It indicates that the bond is polar.