Name the zinc ore that consists mainly of zinc sulfide.
Describe how zinc sulfide is changed into zinc oxide in step 1.
Name the reducing agent used in step 2.
Explain why zinc becomes a gas in step 2 inside the furnace.
State the name of the physical change occurring when zinc gas is converted into molten zinc.
In step 1, zinc carbonate is in excess when no more zinc carbonate dissolves. State one other observation that indicates the zinc carbonate is in excess in step 1.
Name one substance other than zinc carbonate that could be added to dilute sulfuric acid to make aqueous zinc sulfate in step 1.
Give a reason why the reaction rate increases. Explain your answer using particles.
Suggest what is observed when the solution becomes saturated in step 3.
Give the formula of the solid formed if the crystals are heated to dryness in step 3.