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Notes Vocab
physical science notes vocabulary
Term | Definition |
---|---|
Element | any pure substance that is made of only one kind of atom |
Monotomic Elements | have 1 atom in natural state |
Diatomic Elements | have 2 atoms in natural state |
Periodicity | the repetition of certain properties at regular intervals when elements were placed in order of atomic MASS. |
Periodic Law | the properties of elements vary in a periodic or recurring pattern with their atomic masses |
Periodic Law (revised) | properties of the elements vary with their atomic numbers in a periodic way |
Metals | luster, malleable, conduct electricity, ductile |
Non-metals | lack luster, brittle, don't conduct electricity, not ductile |
Second Law of Thermodynamics | all natural processes move toward a state of minimum energy |
Octet rule | atoms generally are most stable when they have a full 8 elctrons in their valence energy level |
Electron Affinity | deals with the strength of attraction of electrons to unbonded atoms |
Electronegativity | deals with an atom's ability to attract and hold electrons when bonded to other atoms |
Covalent bonds | non-metal/non-metal |
Ionic bonds | metal/non-metal |
Metallic bonds | metal/metal |