AQA Chemistry A-level Physical Chemistry Concepts

These flashcards cover essential concepts, definitions, and processes in AQA Chemistry A-level Physical Chemistry.

The smallest part of an element that can exist is called an __.

Atom

The positively charged object composed of protons and neutrons at the center of every atom is called the __.

Atomic nucleus

The number of protons in the nucleus is known as the __.

Atomic number

The negatively charged subatomic particle that orbits the nucleus at various energy levels is called an __.

Electron

The distribution of electrons of an atom in orbitals is referred to as __.

Electron configuration

The method of ionisation in TOF spectrometry where electrons are fired at a vaporised sample is called __ ionisation.

Electron impact

The energy required to remove 1 mole of electrons from 1 mole of gaseous atoms is defined as __ energy.

First ionisation

The __ stage of TOF spectrometry includes the detection of charged particles by a negatively charged plate.

Ion detection

Atoms of the same element with the same number of protons but different numbers of neutrons are called __.

Isotopes

The total number of protons and neutrons in the nucleus is known as the __.

Mass number

A mass spectrometer provides information about relative isotopic mass and the __ of isotopes.

Relative abundance

The number of atoms, molecules, or ions in one mole of a substance is referred to as __ constant.

Avogadro’s

The smallest whole number ratio of atoms of each element in a compound is called the __ formula.

Empirical

The percentage ratio of the actual yield from a reaction compared to the theoretical yield is known as __ yield.

Percentage

A co-ordinate bond contains a shared pair of electrons with both electrons supplied by __ atom.

One

The attraction between a hydrogen atom and an electronegative atom is known as __ bonding.

Hydrogen

The __ theory is used to deduce the geometry of molecules based on electron repulsion.

VSEPR

An endothermic reaction is one that takes in __ from the surroundings.

Energy

If pressure is increased, the position of equilibrium shifts towards the side with the __ number of molecules.

Fewest

The agents that donate electrons and get oxidised in a redox reaction are known as __ agents.

Reducing