5433281
Description
Flashcards by Emily Y :), updated more than 1 year ago
|
Created by Emily Y :)
over 8 years ago
|
|
| Question | Answer |
| Cement | Limestone is heated with clay |
| Concrete | Cement mixed with sand, (water) and aggregate can be reinforced with steel |
| Mortar | Cement and sand weaker than concrete |
| Ores | Mined, May be concentrated/purified has to be economical to extract typically metal oxides |
| Metal extraction | If less reactive with carbon: extracted by reduction using carbon More reactive than carbon? Electrolysis |
| Copper extraction | Can be extracted by heating (smelting) purified by electrolysis |
| Aluminium and Titanium extraction | Electrolysis extraction >lots of evergy used >many stages in the process Titanium extracted by displacement |
| Cast Iron | 96% iron High strength in compression Brittle Manhole covers, etc. |
| Steels | Low carbon = easily shaped High carbon = hard Stainless steels (with chromium and nickel) = corrosion resistance |
| Transition metals Advantages | Malleable, ductile to heat and electricity |
| Copper Uses + advantages | Electical wiring and pipes Good conductor Malleable yet hard Unreactive with water |
| Aluminium/titanium Uses/advantages | Low density Corrosion resistant hip replacements etc. |
| Alloys (General) | Make harder (different sized atoms disrupt regular structure) Differing properties All metals bond e.g brass, steels, etc. |
Want to create your own Flashcards for free with GoConqr? Learn more.