Metals Flashcards
What is the reducing agent in the blast furnace?
Carbon monoxide
In refining copper, the ______ is impure and the ______ is pure.
- Anode
2. Cathode
What is stainless steel composed of?
70% iron, 20% chromium, 10% nickel
State the reactions that take place inside a blast furnace (before the removal of impurities).
Carbon + oxygen –> carbon dioxide
Carbon + carbon dioxide –> carbon monoxide
Hematite + carbon monoxide –> iron + carbon dioxide
What is the name for zinc ore and what is it predominantly made up of?
- Zinc blende
2. Zinc sulphide
What is mild steel composed of?
99.5% iron, 0.5% carbon
Transition elements: Form \_\_\_\_\_\_\_ compounds Act as \_\_\_\_\_\_\_\_\_\_\_ Relatively \_\_\_\_\_\_ densities Relatively \_\_\_\_\_\_ melting points
- Coloured
- Catalysts
- High
- High
Group 7 metals:
______ non metals
Melting points ______ down the group
Colour becomes ______ down the group
- Diatomic
- Increase
- Darker
Order the reactivity of:
Zinc, potassium, calcium, hydrogen, copper, carbon, aluminium. Magnesium, iron, sodium
- Potassium
- Sodium
- Calcium
- Magnesium
- Aluminium
- Carbon
- Zinc
- Iron
- Hydrogen
- Copper
What is the activity of a metal based on?
It’s tendency to form an ion
What is the name for aluminium ore and what is it predominantly made up of?
- Bauxite
2. Aluminium oxide
State the 2 steps for the extraction of zinc.
- Roasted in air - zinc blende + oxygen –> zinc oxide + sulfur dioxide
- Separated using electrolysis in a furnace - zinc oxide + carbon monoxide –> zinc + carbon dioxide
What is the name for iron ore and waht is it predominantly made up of?
- Hematite
2. Iron oxide (Fe2O3)
List the 4 things that go into a blast furnace in the extraction of iron from its ore.
- Hematite
- Carbon
- Limestone
- Ht air
What is slag?
Calcium silicate