Chemistry Core A - Products From Rocks: Using Limestone Flashcards
Which type of material is limestone most commonly used for?
Limestone is most commonly used for building materials.
What is limestone often formed from?
Limestone is often formed from sea shells.
What compound makes up most of limestone?
Calcium Carbonate makes up most of limestone.
Where do we get limestone from?
Limestone is quarried out of the ground.
What type of buildings are made purely of limestone?
Old cathedral buildings are made purely from limestone.
Is limestone reactive?
Limestone is reactive.
What is produced when Calcium Carbonate thermally decomposes?
When Calcium carbonate thermally decomposes, it produces Calcium Oxide and Carbon Dioxide.
What is the chemical formula equation for the thermal decomposition of Calcium Carbonate?
CaCO₃ −heat−> CaO + CO₂
What other types of metal carbonates thermally decompose to produce an oxide and Carbon Dioxide?
When Magnesium; Copper; Zinc; and Sodium Carbonates decompose they all produce an Oxide and Carbon Dioxide.
When Magnesium Carbonate thermally decompose, what is produced?
When Magnesium Carbonate thermally decomposes it produces Magnesium Oxide and Carbon Dioxide.
What is the chemical formula equation for the thermal decomposition of Magnesium Oxide?
MgCO₃ −Heat−> MgO + CO₂
What determines the temperature at which a Carbonate will thermally decompose?
The group number that the Carbonates metal is in determines the temperature at which the Carbonate will thermally decompose. Some group one metal Carbonates can not be thermally decomposes with a Bunsen burner.
What is produced when Calcium Carbonate reacts with an acid?
When Calcium Carbonate reacts with an acid it produces a salt; Carbon Dioxide and water.
What is produced when Calcium Carbonate reacts with Sulphuric acid?
When Calcium Carbonate reacts with Sulphuric acid it produces Calcium Sulphate; Carbon Dioxide and water.
What is the chemical formula equation for the reaction between Calcium Carbonate and Sulphuric acid?
CaCO₃ + H₂SO₄ −> CaSO₄ + CO₂ + H₂O
What is the type of salt produced by the reaction between Calcium Carbonate and an acid dependant on?
The type of salt produced by the reaction between Calcium Carbonate and an acid is dependant on the type of acid.
If a Carbonate reacts with Hydrochloric acid what will be the type of salt produced?
The type of salt produced will be a Chloride.
What are the different type of metal carbonates that react with acids?
Magnesium; Copper; Zinc; and Sodium are all carbonates that react with acids.
What is produced when Calcium Oxide reacts with water?
When Calcium Oxide reacts with water it produces Calcium Hydroxide.
What is the chemical formula equation for the reaction between Calcium Oxide and water?
CaO + H₂O -> Ca(OH)₂
Is Calcium Hydroxide an acid or an alkali?
Calcium Hydroxide is an alkali.
What is Calcium Hydroxide used for neutralising?
Calcium Hydroxide is used for neutralising acidic soil.
Why is Calcium Hydroxide a more favourable for neutralising acid, than crushed Limestone?
Both Calcium Hydroxide and crushed Limestone neutralise acidic soil; however, Calcium Hydroxide performs the task faster.
How can Calcium Hydroxide be used to test for the presence of Carbon Dioxide in a gas?
If a Calcium Hydroxide and water solution (called Limewater) has gas bubbled through it and Carbon Dioxide is present; it will react with the Calcium Hydroxide to form a cloudy substance called Calcium Carbonate and water.
What is the chemical formula equation for Calcium Hydroxide reacting with Carbon Dioxide?
Ca(OH)₂ + CO₂ −> CaCO₃ + H₂O
How can Limestone be used to make cement?
Powdered limestone can be heated in a kiln with powdered clay to make cement.
How can Limestone cement be used to make mortar?
Limestone cement can be mixed with sand and water to make mortar.
How can Limestone cement be used to make concrete?
Limestone cement can be mixed with aggregate (gravel and water) to make concrete.
