True or false: Improper waste disposal from the blast furnace is hazardous to the environment
TRUE!
100
Define electrolysis.
A chemical decomposition reaction produced by passing an electric current through a solution containing ions
100
Finish the equation.
MgCl2 (l) -->
Mg (s) + Cl2 (g)
200
What color is iron?
Silver/Lustrous Grey
200
What is responsible for reducing the iron ore into the metal iron?
Carbon Monoxide
200
What is another term for molten calcium silicate?
Slag
200
True or false: A cation is positively charged.
TRUE!
200
Will this equation change?
Na2O (s) -->
No.
300
Which type of iron is brittle and has a high resistance to corrosion?
Cast Iron
300
What is the temperature during this reduction? (in degrees Celsius)
1500
300
What is slag used for?
Road work/Construction
300
Name at least four uses for electrolysis.
o Production of hydrogen for hydrogen cars
o For astronauts in space- separates water from oxygen
o Production of chlorine
o Extraction of metals from their ores (aluminum, lithium, sodium, and potassium)
o Electroplating
o Batteries work in the reverse process of electrolysis
o Purification of metals
o Electrolytic etching (putting designs or marks on metals)
o Anodizing
o Removal of unwanted bodily hair
300
What is the charge of elements at group three?
Positive 3
400
What is another term for pure iron?
Wrought iron
400
At what temperature will the iron be liquid at the bottom of the blast furnace? (in degrees Celsius)
Part one: Stick the electrodes in
Part two: Each ion will move to the oppositely charged electrode
Part three: Ions will discharge at electrodes (positive ion at negative electrode, negative ion at positive electrode)
500
Show what happens to a Ca ion at a negative electrode. (Equation, including charge)