Bonding Basics
This type of bond forms when electrons are transferred from one atom to another.
ionic bonds
Ionic compounds form a giant structure called this.
giant ionic lattice
Ionic compounds generally have __________ melting points.
high
ionic compounds such as NaCl can conduct energy when molten or dissolved because these can move.
ions
Sodium chloride is an example of this type of compound.
ionic compound
This type of bond forms when atoms share pairs of electrons.
covalent bonding
Simple covalent substances consist of these small particles.
molecules
Most simple covalent substances have _________ melting points.
low
Free 200 :)
+200
Water (H₂O) is an example of this type of compound.
covalent compound
Ionic bonding occurs between these two types of elements
metal and non-metal
This force holds ions together in an ionic lattice.
strong electrostatic force of attraction
when melting or boiling, ionic compounds need a lot of energy to overcome these forces.
strong electrostatic forces
Solid ionic compounds cannot conduct because...
their ions are in a fixed positions
Magnesium oxide is classified as this type of substance.
ionic compound
Covalent bonding usually occurs between atoms of this type of element.
non-metals
simple covalent structures contain only a few atoms held together by strong covalent bonds but _________ _____________________ ____________ between molecules.
weak intermolecular forces
Simple covalent substances require little energy to melt or boil because these forces are weak.
intermolecular forces
Why can't most covalent compounds conduct electricity?
Double points: name one covalent compound that can conduct electricity.
no charged particles
Carbon dioxide is an example of a _________ __________ substance.
simple covalent
In solid ionic substance the ions are in ________________ _______________, so they do not conduct electricity.
fixed positions
giant covalent structures are held together by ___________ ______________________ _________________.
strong covalent bonds
Why does diamond have a very high melting point despite being made of the non-metal carbon?
it is a giant covalent structure containing lots of strong covalent bonds that need to be overcome
Graphite is unusual because it conducts electricity due to these particles.
delocalised electrons
Diamond and graphite are examples of this type of covalent structure.
giant covalent structures