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
What elements are made up of
Atoms
Protons and neutrons are located here
Nucleus
Bond formed when electrons are transferred between atoms
Metals are good conductors; nonmetals are called this:
Insulators
How elements on the periodic table are arranged
Increasing atomic number
The only metal that is a liquid at room temperature
Mercury
Electron
Bond formed when atoms share electrons
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
An atom at its lowest energy is in this state
Ground state
Type of bond formed between Ca and F
Ionic
Spectrum
The columns on the periodic table
These elements have properties of metals and nonmetals
Metalloids
An atom with an unstable nucleus is called this
Radioactive
A group of atoms joined by covalent bonds
Molecule
A solid mixture of metals
Alloy