Module 2- Off By Heart Flashcards
Definition of ionic bonding
Electrostatic attraction between oppositely charged ions
Definition and calculations for mass number
Mass number is the number of protons and neutrons in the nucleus
Mass number = number of neutrons + number of protons
Definition of atomic number
The number of protons in the nucleus of an atom
Definition of an isotope
Atoms of the same element with the same atomic number but different mass numbers and numbers of neutrons
Definition of an ion
A charged particle formed by the loss or gain of electrons from an atom or group of atoms
Definition of relative atomic mass
The weighted mean mass of an atom of an element relative to 1/12th the mass of 1 atom of carbon-12
Definition of relative isotopic mass
Relative isotopic mass is the mass of an isotope relative to 1/12th the mass of 1 atom of carbon-12
Define empirical formula
The simplest whole number ratio of atoms of different elements in a compound
Define percentage yield
The ratio of the actual yield to the theoretical possible yield as a percentage
Definition of an acid
An acid is a proton donor which releases H+ ions in solution
definition of a base
Definition of an alkali
A base is a proton accepter
An alkali is a soluble base which releases OH- ions in water
Define an orbital
An orbital is a region around the nucleus that can hold two electrons of opposite spins
Definition of covalent bonding
The strong electrostatic attraction formed between a shared pair of electrons and the nuclei of bonded atoms to form structures isoelectronic to noble gases
Definition of electronegativity
Electronegativity is the ability of an atom in a covalent bond to attract a bonded pair of electrons towards it
