Metals and Corrosionr Flashcards
revise (32 cards)
What does malleable mean?
That the metal can be hammered or rolled into thin sheets.
Which metal is the most malleable?
Gold ( Au )
How/Where is the malleability of a metal is beneficial and desirable?
-making pots and pans
-sheets of metal for construction
-jewelry
Where are metals used because of their strength?
-Building/Construction
-Car production
What are the 5 strongest metals?
Iron, Titanium, Tungsten, Chromium, Vanadium
What is density measured in?
g/cm3
Why can some metals float on water?
Their density is less than that of water so they will float.
Why are metals like aluminium and magnesium desirable in the construction industry?
-light
-strong
-durable
Magnesium is a good insulator.
What metals are desirable in the construction industry?
-aluminium
-magnesium
Where are metals used because of their electrical conductivity?
-Wires
-Batteries
-Hearing Aids
Which 3 metals are the best conductors of electricity?
-silver
-copper
-gold
Why do pans and radiators relate to a metals ability to conduct heat?
-They conduct heat well
-Chemically Unreactive
-Metals are good conductors of heat = perfectly suited for cooking implements and radiators
Which 3 metals are the best conductors of heat?
-Copper
-Aluminium
-Silver
What is a ‘alloy’?
Metals are often mixed to form alloys.
An alloy is made to improve the properties of the metal.
What is the most well-known alloy?
STEEL
Is steel a metal?
No, it is a mixture
How is steel formed?
When iron is mixed with a small amount of carbon. STEEL is tougher than iron.
Main element = iron
Added element = carbon
What are the properties and uses of STEEL?
-construction , engineering
-agriculture, manufacture of cars
-STRONG + DURABLE
What is stainless steel made of?
Main element = iron
Added element = chromium, carbon
What are the properties and uses of stainless steel?
-High tensile strength
-Temperature resistance
- Very durable
-Doesn’t rust
- Unreactive
-Good conductor of heat
-cutlery, pots and pans, jewelry
What is brass made of?
Main element = copper
Added element = zinc
What are the properties and uses of brass?
-Low friction
-Good conductor
-Low melting point
-Malieable
-Ductile
-Anti-microbial
-instruments, handles, candle sticks, cutlery, plumbing parts
What is duralumin made of?
Main element = aluminium
Added element = copper, magnesium, maganese
What are the properties and uses of duralumin?
-Strong, light-weight, durable, reflective, maileable
-aircrafts, make rods, wires, firearms
