C2.3 Covalent Compounds And Speararation Techniques Flashcards
What is a covalent bond?
When two atoms share a pair of electrons to give both of them a full outer shell.
Which six atoms/ molecules are common examples of covalent bonding?
Hydrogen Hydrogen chloride Methane Oxygen Water Carbon dioxide
What is a simple molecular covalent substance?
A substance that has covalent bonds and have low boiling and melting points, and don’t conduct electricity.
What is a giant molecular covalent substance?
A substance that has covalent bonds with a very high melting and boiling point that does not conduct electricity when solid or molten. Giant Molecular Covalent substances are usually insoluble in water.
What is the hardest natural substance in the world and why?
Diamond because each carbon atom has four covalent bonds in a very rigid structure.
Why is graphite a good conductor of electricity?
Each carbon atom only has 3 covalent bonds so there are lots of delocalised electrons.
What does miscible mean?
Liquids that mix with each other
What does immiscible mean?
Liquids that don’t mix
