Regents Chemistry Study Pack Vocabulary

Vocabulary flashcards covering core Regents Chemistry concepts including atomic structure, bonding, energy, reactions, solutions, acids and bases, organic chemistry, and nuclear chemistry based on the lecture transcript.

Periodic trend (Period): Electronegativity

Increases (↑) across a period, meaning that atoms attract electrons more strongly as you move from left to right on the periodic table.

Periodic trend (Group): Radius

Increases (↑) down a group, indicating that atomic size grows larger as you move down the periodic table due to the addition of electron shells.

Periodic trend (Period): Radius

Decreases (↓) across a period, which means atomic size becomes smaller from left to right because the increased nuclear charge pulls the electrons closer to the nucleus.