Covalent Substances Flashcards
0
Q
Explain the formation of a hydrogen atom
A
Hydrogen atoms have just one electron
They only need one more to complete the 1st shell
1
Q
Covalent bonds are
A
Shared pair of electrons with other atoms
Both atoms feel like they have a full outer shell
2
Q
Covalent bonding involves
A
Strong attraction between the bonding pair of electrons and the nuclei of the atoms involved in the bond
3
Q
Simple molecular forces are
A
Usually liquids solids or gases with low melting points
4
Q
Why do simple molecular substances have low melting points
A
Weak intermolecular forces
5
Q
Why do giant covalent structures have high melting points and boiling points
A
As there are many strong covalent bonds that have to be broken which requires a lot of heat energy
