1. GCSE Core Chemistry Exam tip; Thermal Decomposition means ‘breaking down using heat’ Key words; formula, quicklime, thermal decomposition, word equation

2. GCSE Core Chemistry Exam tip; Thermal Decomposition means ‘breaking down using heat’ Learning Objectives: By the end of the lesson I can: The formula of a compound shows the number and type of atoms that are joined together to make the compound. Calcium carbonate can be decomposed by heating (thermal decomposition) to make quicklime (calcium oxide) and carbon dioxide. Calcium carbonate can be decomposed by heating (thermal decomposition) to make quicklime (calcium oxide) and carbon dioxide. Limestone (CaCO 3 ), and its products have many uses, including slaked lime, mortar, cement, concrete and glass. Limestone (CaCO 3 ), and its products have many uses, including slaked lime, mortar, cement, concrete and glass. Consider and evaluate the environmental, social and economic effects of exploiting limestone and producing building materials from it. Consider and evaluate the environmental, social and economic effects of exploiting limestone and producing building materials from it.

3. GCSE Core Chemistry Exam tip; Thermal Decomposition means ‘breaking down using heat’ What do the following substances have in common? Limestone and Chalk are sedimentary rocks Marble is a Metamorphicrock Calcium carbonate is a pure compound! it is not a rock and hence it is not a mixture!

4. GCSE Core Chemistry Exam tip; Thermal Decomposition means ‘breaking down using heat’ Classify the following substances into groups & explain why you have

5. GCSE Core Chemistry Exam tip; Thermal Decomposition means ‘breaking down using heat’ Task: Use your text to create an A-map 1.Add keywords 2.Add pictures 3.Complete sentences using keywords to connect the map

6. GCSE Core Chemistry Exam tip; Thermal Decomposition means ‘breaking down using heat’ Peer Learning ANOTHER 4 th COLOUR Swap your map with another pair on your table and add in ANOTHER 4 th COLOUR any additional information to further improve their map.

7. GCSE Core Chemistry Exam tip; Thermal Decomposition means ‘breaking down using heat’ Summary 1 We quarry large amounts of limestone rock because it has many uses. Blocks of limestone can be used for building and it is used to make; Quicklime Cement glass

8. GCSE Core Chemistry Exam tip; Thermal Decomposition means ‘breaking down using heat’ Summary 2 Limestone is made mainly of calcium carbonate What is the formula? When heated strongly in large lime kilns, calcium carbonate decomposes to make quicklime (calcium oxide) and carbon dioxide. What is the formula? We can present the reaction as a word equation What is the word equation?