Chemistry JAN EXAM Flashcards
define electrolysis
splitting up an ionic compound using electricity (the opposite of ionic bonding)
What is the name of the positive electrode in electrolysis?
anode
What is the name of the negative electrode in electrolysis?
cathode
What happens at the anode during electrolysis?
OIL
-oxidation
-loss of electrons
what happens at the cathode during electrolyis
RIG
-reduction
-gain of electrons
what power supply is needed during electrolysis
6v d.c
What do we use to show that an electrical current is passing through during electrolysis
a bulb
when there are weak intermolecular forces molecules…
little energy needed to overcome the forces
what is a metallic bond
-between metals
-strong electrostatic forces between positive metal cations and negatively charged free moving delocalised electrons
-lattice between metal cations and sea of delocalised electrons
-conduct electricity and heat
what is an ionic bond
-metal and non-metal
-strong electrostatic force between oppositely charged ions
-lots of energy to overcome forces
-high melting and boiling point
is a diamond a giant covalent structure or a simple structure
giant covalent
what is a diamond structure
-4 covalent bonds between each carbon atom
-no conducting electricity
is graphite a giant covalent structure or a simple structure
giant covalent stucture
what is a graphite structure
-3 strong covalent bonds between each carbon atom
-forms layers
-conduct electricity
-free moving delocalised electrons between layers
-SOFT
-high melting point
is a graphine a giant covalent structure or a simple structure
simple structure
what is graphene structure
-single layer
-3 strong covalent bonds between each carbon atom
-conduct electricity across surface
is a buckminsterfullerene a giant covalent structure or a simple structure
simple structure
what is a buckminsterfullerene structure
-weak intermolecular forces
-low melting point
-can conduct electricity across surface but not across many molecules
-3 covalent bonds
-free moving delocalised electrons
is nanotubes a giant covalent structure or a simple structure
simple
what is nanotubes structure
-3 covalent bonds
-good conductors
