8.1 & 8.2 Flashcards
molecule
most basic unit of a covalent compound and also any 2(+) atoms held together by covalent bonds
monoatomic
exists in nature as a single atoms
what are the 7 diatomic elements?
I, H, N, B, O, Cl, F
covalent bonds are made between ____ atoms
non metal
are covalent bonds conductors of electricity at any state?
NO
molecular formula
tells you the elements in the compound and the number of each type of atom in the molecule
structural formula
tells you the elements in the compound and the number or each type of atom in the molecule AND the arrangement of atoms and bonds
isomer
compounds that have the same chemical formula but different structures
molecule is to ____ where structural formula is to ___
roster, seating chart
the representative unit of a molecular/covalent compound is a ____
molecule
the representative unit for an ionic compound is ___
formula unit
molecule ____ break apart when compound melts, boils, or dissolves
DOESNT
formula units ___ break apart into ions when melted or dissolved
DO
molecular compounds have a ____ melting point
low
ionic compounds have a ____ melting point
high
molecular compounds have a ___ boiling point
low
ionic compounds have a ____ boiling point
high
molecular compounds are ___ at room temp
gases or liquids
ionic compounds are ___ at room temp
solids
molecular compounds are made of ___
2(+) nonmetals
ionic compounds are made of ___
metals combined with nonmetals
in molecular compounds molecules act ___
as one unit
in ionic compounds the ions ___
done act as one unit; continuous array of ions
the most number of bonds that can form between any 2 atoms is ___
3
