1.6 - Limestone Flashcards
(27 cards)
Reaction of metal carbonates
Thermal decomposition
Result of metal carbonates being heated
Metal oxide and carbon dioxide gas
Stability measured
-Heating the carbonate
-Bubbling carbon dioxide through limewater
-The quicker the limewater becomes milky the less stable it is
Calcium carbonate symbols
CaCO3
Other name for calcium carbonate
Limestone
Indication of calcium oxide forming
Orange glow
Other name for calcium oxide
Quicklime
Calcium oxide (Quicklime) formed
Heating calcium carbonate (Limestone)
Calcium hydroxide (Slaked lime) formed
Water added to calcium oxide (Slaked lime)
Uses of calcium oxide
Making cement and plaster
Indication of calcium oxide Turing to calcium hydroxide
Water turning to steam
Calcium carbonate state
Solid
Calcium oxide state
Solid
Calcium hydroxide state
Solid and liquid
Other name for calcium hydroxide (Solid)
Slaked lime
Calcium hydroxide formed (liquid)
Dissolved in excess water
Uses of limewater
Testing for carbon dioxide
Limestone
Calcium carbonate
Quicklime
Calcium oxide
Solid calcium hydroxide
Slaked lime
Aqueous calcium hydroxide
Limewater
Calcium carbonate to calcium oxide
CaCO3 -> CaO + CO2
Calcium oxide to solid calcium hydroxide
CaO + H2O -> Ca(OH2)
Uses of limestone
Building material, Cement, Toothpaste, Food additive, Removing impurities from blast furnaces
