Limestone Flashcards
What rain does Limestone reacts with?
Acid Rain
What is limestones Formula?
CaCO3
What three building materials does Limestone help to make?
Cement
Concrete
Mortar
How do you create Cement?
You heat limestone with clay in a heated kiln
How does Limestone turn into quicklime?
It goes through an endothermic reaction/thermal decomposition.(heat it up)
What is the equation for a thermal decomposition?
Calcium carbonate➡️calcium oxide + carbon dioxide.
CaCO3 ➡️ CaO + CO2
Is limestone an acid or alkali?
an alkali
What is calcium hydroxide used for?
it is used to neutralise acidic conditions.
Calcuim Oxide is not helpful to humans so we mix it with WHAT to make Calcium hydroxide?
Water
Finish this reaction(word equation):
Calcium carbonate + sulfuric acid➡️…
… Calcium sulfate + Carbon dioxide +water
How do we use Limestone to test for CO2?
You blow bubbles through a straw into limewater and if it goes cloudy you have produced CO2
How do you turn slaked lime into limewater?
You dissolve slaked lime in water
Why do you we turn limestone into different building materials?
Because if we used Limestone for statues and buildings would be ruined by acid rain.
How is concrete made?
cement,sand,water and crushed rocks (aggregate) are heated together
How is mortar made?
Cement, sand and water are heated together
