Metallic Bonding Flashcards
Provide 5 properties of metals
- lustrous
- conductive
- malleable
- high density
- hard
Describe the name of electrons which can move between cations in a metallic lattice structure
Delocalised electrons
Describe alloys
Mixing a metals with other metals/non-metals to alter properties
Describe substitutional alloys
Atoms used in an alloy are of equivalent size and easily replace one another
Provide an example of a substitutional alloys
Sterling silver
Describe interstitial alloys
Smaller atoms used in an alloys fit into spaces between larger atoms
Provide an example of a interstitial alloy
Steel
State 3 ways metals can be modified using heat
- annealed
- quenched
- tempered
Describe annealing
Metals are heated until they are red hot and then cooled slowly
Describe quenching
Metals are heated until they are red hot and then allowed to cool quickly in cold water
Describe tempering
Quenched metals are warmed at low temperatures and cool slowly
Provide the name of the metal with the greatest
reactivity
Potassium (K)
Provide the name of the metal with the lowest reactivity
Gold (Au)
Provide the word equation for a reaction between metal and oxygen
metal + oxygen -> metal oxide
Provide the word equation for a reaction between metal and water
group 1 metal + water -> group 1 metal hydroxide + hydrogen
Provide the word equation for a reaction between metal and acid
metal + acid -> ionic salt + hydrogen
Describe the general difference between metals and transitional metals
Transition metals have an incomplete inner subshell allowing valence electrons to reside in shells other than the outer shell - several oxidation states.
State what the block of the periodic table containing transitional metals is referred to as
d-block
Provide a social, environmental and economical issue association with ore extraction
- costs of obtaining and transporting raw materials.
- destruction of landscape in open-cut mining
- Indigenous land rights/world heritage sites
