L I M E S T O N E Using the letters from the word ‘limestone’, write one key word associated with limestone for each letter For instance; L = Light grey.

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Presentation transcript:

L I M E S T O N E Using the letters from the word ‘limestone’, write one key word associated with limestone for each letter For instance; L = Light grey in colour I = Is used in... M = M... E =

Metal carbonate Describe reactions of limestone Explain the decomposition reaction of metal carbonates

What is limestone?

Match the chemical name with the chemical formula CO2 CO CaO MgCO2 MgCO3 CaCO MgO CaCO2 CaCO3 Magnesium carbonate Calcium oxide Magnesium oxide Carbon dioxide Calcium carbonate

Match the chemical name with the chemical formula CO2 CO CaO MgCO2 MgCO3 CaCO MgO CaO2 CaCO3 Magnesium carbonate Calcium oxide Magnesium oxide Carbon dioxide Calcium carbonate

Using the cards Find the required compounds to make your equations! Make the thermal decomposition reaction of limestone What are the products of this reaction? Make the reaction which produces calcium hydroxide. What is the chemical formula for calcium hydroxide?

Limestone Write the thermal decomposition reaction of limestone What are the products of this reaction? Write the reaction which produces calcium hydroxide. What is the chemical formula for calcium hydroxide? What is calcium hydroxide used to test for the presence of?

Test for carbon dioxide Using Ca(OH)2 we can test for carbon dioxide Bubble gas through test tube of limewater Ca(OH)2 (aq) If carbon dioxide is present, limewater will turn milky If carbon dioxide is not present, limewater will remain clear

What is a metal? Elements which are found in group 1 or 2 They have 1 or 2 electrons on their outer shell and react similarly to each other They are usually hard, malleable, high melting points They conduct electricity

What is a carbonate? A COMPOUND consisting of: A carbon atom 3 oxygen atoms This has a negative charge so tends to bond with positively charged ions A METAL carbonate consists of: A metal also

Metal carbonates Ag2CO3 CoCO3 Using what you know about metal and about carbonates, suggest three more examples of metal carbonates Ag2CO3 CoCO3

Decomposition of metal carbonates When heated calcium carbonate will have broken down into calcium oxide and carbon dioxide This is the same for all metal carbonates What would the reactions be for sodium and magnesium?

Summary questions What would the chemical reaction be if you heated: Sodium carbonate Magnesium carbonate Pick a third metal of your choice Suggest why you think that metal carbonates all react similarly when heated