Unit 1: Atomic Structure & Properties
This subatomic particle determines the identity of an element.
What is a proton?
These are the weakest intermolecular forces and are present in all atoms and molecules.
What are London dispersion forces?
This is the minimum energy required for a reaction to occur.
What is activation energy?
The weighted average mass of all naturally occurring isotopes of an element is called this.
What is average atomic mass?
This intermolecular force occurs when hydrogen is bonded to nitrogen, oxygen, or fluorine.
What is hydrogen bonding?
This theory states that particles must collide with proper orientation and enough energy to react.
What is collision theory?
Electrons are most likely found in these regions of space around the nucleus.
What are orbitals?
This property measures a liquid’s resistance to flowing.
What is viscosity?
This substance speeds up a reaction without being consumed.
What is a catalyst?
This experimental technique measures electron binding energies in atoms.
What is photoelectron spectroscopy (PES)?
This property decreases as intermolecular forces increase.
What is vapor pressure?
This step in a reaction mechanism determines the overall reaction rate.
What is the rate-determining step?
This explains why atomic radius decreases from left to right across a period.
What is increasing effective nuclear charge?
This phase change occurs when a solid changes directly into a gas.
What is sublimation?
This mathematical expression relates reaction rate to reactant concentrations.
What is the rate law?