The Periodic Table
Russian chemist known as the "father of the periodic table"
Mendeleev
The lightest element
hydrogen
The positively charged particle in an atom
proton
These electrons are involved in chemical bonds
valence electrons
This is formed when an atom gains or loses electrons
ion
The rows on the periodic table
periods
what elements are made up of
atoms
Protons and neutrons are located here
in the nucleus
Bond formed when electrons are transferred between atoms
ionic
Metals are good conductors; nonmetals are called this
insulators
How the elements on the periodic table are arranged
increasing atomic number
The only metal that is liquid at room temperature
mercury
Negatively charged particle
electron
Type of bond formed when atoms share electrons
covalent
Carbon-12 and carbon-13 are examples of this
isotopes
Average mass of all isotopes of an element
atomic weight
This group of elements are the least reactive
noble gases
An atom at its lowest energy is in this state
ground state
Type of bond formed between Ca and F
ionic
Pattern of colors produced by an element
spectrum
The columns on the periodic table
groups
These elements have properties of metals and nonmetals
semimetals
radioactive
A group of atoms joined by covalent bonds
molecule
A solid mixture of metals
alloy