Vertical columns, elements share similar properties, # of valence electrons
Horizontal rows, elements have the same # of orbitals as their period #
To the left of the zig-zag
To the right of the zig-zag
Energy levels or orbitals, where the electrons are located
Characteristics that can be observed using the 5 senses
Characteristics that can only be observed after you CHANGE the substance
A pure substance, made of atoms, that cannot be broken down into other substances by physical or chemical means.
A one or two letter notation used to represent an atom of a particular element.
The number of protons in the nucleus of an atom
The average mass of one atom of an element.
The electrons in the outermost energy level of an atom that influence how an element will react with other substances.
The rate it takes a substance to undergo a chemical reaction
The attraction between atomsThe attraction between atoms that allows the formation of chemical substancesThe attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electrostatic force of attraction between opposite charges
How well the substance allows heat, sound, or electricity to travel through it
The ability of a substance to permanently alter another substance
The extent to which a substance can be stretched out without breaking
How easily something will burn or ignite
The way the surface of a mineral reflects light
Capability of being shaped or formed
A substance combines with oxygen and a chemical reaction takes place
The rate at which a solute dissolves in a solvent
A liquids resistance to movement or flow
Amount of matter in a given volume
Density = Mass/Volume
A substance that reduces the transfer of thermal energy
A substance made of two or more elements that are chemically combined.
One of two or more atoms with the same atomic number that contains different numbers of neutrons
The smallest complete unit of a compound with the same properties of the compound.
A neutral particle that is part of the atom's nucleus with a mass of 1 amu.
A negatively charged particle found in the space around the nucleus of an atom with nearly a mass of zero amu.
A positively charged particle that is part of an atom's nucleus with a mass of 1 amu.
The smallest particle of an element that retains the properties of that element, they are the building blocks of matter
Unreactive non-metals in Group 18 of the Periodic Table.