Year 10 - Bonding Flashcards
what is the mass number
protons + neutrons
what is the atomic number
protons / electrons
What would 3 full shells look like
2 , 8 , 8
what goes around the shells
electrons
what are isotopes
atoms with the same atomic number but different mass number
how do you find out the relative atomic mass
multiply each mass number with its percentage then add the 2 together
(_% x ) + (% x _) = ?
why do electrons bond
to have a full outer shell
what are ions
charged atoms
why do ions bond
because negatives attract
what shape does ionic bonding form
a giant lattice
what types of elements bond in ionic bonding
Metals and non-metals
what types of elements bond in covalent bonding
non-metals and non-metals
what type of structures does each type of bonding make
ionic - giant lattice
Covalent - simple
metallic - giant
what melting points do each types of bonding have
ionic - high
covalent - low
metallic - high
in what form do each types of bonding conduct electricity
ionic - when molten or dissolved
covalent - never
metallic - in whatever form