Atoms, ions, bonding Flashcards
Atom
The fundamental building block of all matter
Atomic number
The number of protons in the nucleus of an atom
Atomic Symbol
Chemical symbol, atomic number and mass number
Compound
A pure substance that is made up of 2 or more different types of atoms
Element
A substance with 1 type of atom
Electron
Small, negatively charged particle
Electron Cloud
Region of negative charge surrounding the nucleus
Formula
Chemical equation in symbols
Isotope
Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nucleus
Mass Number
The number of protons and neutrons in an atom
Neutral
Having no charge at all
Nucleus
Cluster of protons and neutrons in the centre of an atom
Proton
Positively charged particle
Neutron
Particle with no charge
Ion
An atom that has gained or lost an electron
Anion
An ion that has more electrons than protons and is negatively charged
Cation
An ion with less electrons than protons and is positivly charged
Polyatomic ion
Containing more than 1 atom
Ionic bond
Bond with a metal atom and a nonmetal atom
Covalent bond
Bond between nonmetals
Metals
Shiny, strong, malleable, ductile, conductors of heat and electricity
Nonmetals
Dull, Brittle, Not Ductile, Poor Conductors of heat and electricity
Metalloids
Characteristics of both
