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In group 8 of the periodic table. Has a full outer shell of electrons and is therefore unreactive
Susbtance that is made up of one type of atom joined together
Substance composed of two or more elements that are chemically bonded together
substance that contains two or more elements that are not bonded together
A subatomic particle found outside the nucleus with a negligible mass and a charge of -1
A subatomic particle found in the nucleus with an atomic mass of 1, and a charge of 0.
A subatomic particle found in the nucleus with an atomic mass of 1 and a charge of +1.
Smallest particle (of an element) capable of exisiting on its own that has aneutral charge
same number of protons (positive charges) and electrons (negatives charges)
the strong electrostatic force of attraction between oppositely charged ions (atoms have been gained or lost)
STRONG BOND created when sharing of electrons between elements
has WEAK intermolecular forces of attraction between compounds so have a low melting and boiling point
have lost an electron
have gained an electron
An atom that has lost or gained electrons and is now charged
ionic bonds between particles create
giant structures (or giant lattice)
Group 1 periodic table
Group 8 periodic table
Mass number on periodic table
The total number of neutrons and protons in the nucleus of an atom.
Atomic number on periodic table
The number of protons (which is equal to thenumber of electrons)
strong electrostatic force of attraction
between negatively and positively charges ions in ionic compounds
simple covalent structures
H2, Cl2, H2O, CH4