simple molecules Flashcards
1
Q
covalent bonds
A
when non metals combine they form covalent bonds by sharing bonds by pairing of electrons this way both atoms have a full outershell
each covalent bond provides one extra shared electron for each atom
using dot and cross diagrams to show covalent bonds
2
Q
simple molecules
A
substances formed with covalent bonds have simple molecular structures
the atoms are held together by very strong covalent bonds but the intermolecular force is very weak
so there are low melting and boiling points because molecules are easily parted from each other
dont conduct electricity as they dont have any free electrons
