1. The Chemistry of Limestone

2. Question 1 The diagram shows a simple lime kiln. When the limestone is heated, it decomposes. Match words from the list with the numbers 1– 4 in the sentences. calcium carbonate calcium hydroxide calcium oxide carbon dioxide Limestone is mainly..... 1...... In the lime kiln, the limestone decomposes into quicklime and... 2... The chemical name of quicklime is..... 3...... When water and quicklime are mixed, they react to form..... 4......

3. Question 2 Cement is produced in a rotating kiln. Which two of the following statements about the production of cement are correct? limestone and substance M react when they are heated together limestone and substance M react when they are mixed together substance M is a mixture of clay and quicklime substance M is a mixture of clay and slaked lime substance M is clay

4. Question 3 The table is about raw materials and substances made from them. Match words from the list with the numbers 1. 4 in the table. calcium oxide concrete limestone slaked lime

5. Question 4 The following diagram shows how some chemical substances are made from limestone. Match words from the list with the labels 1-4 on the diagram. carbon dioxide cement concrete slaked lime

6. Question 5 This question is about common names for substances. Match words from the list with the numbers 1-4 in the table. haematite limestone quicklime slaked lime

7. Question 6 This question is about limestone and some substances that can be made from it. Quicklime is made... A by dissolving slaked lime in water. B by heating limestone strongly. C by the reaction of hydrochloric acid with limestone. D by the reaction of limestone with carbon dioxide.

8. Question 7 This question is about limestone and products from limestone. Match words from the list with the numbers 1– 4 in the sentences. to make cement to make quicklime to make slaked lime to make water less acidic Limestone is added to lakes... 1.... Limestone is heated in a kiln... 2.... Limestone is mixed with clay and then heated... 3.... Calcium oxide is reacted with water... 4....

9. Question 8 Limestone is an important raw material in the manufacture of... 1 aluminium. 2 cement. 3 copper. 4 sulfur dioxide.

10. Question 9 The diagram shows some of the uses of limestone. Match the words A, B, C and D with the numbers 1 – 4 in the diagram. A glass B cement C slaked lime D quicklime Heat in a kiln Limestone 1Heat with sand and soda4 Crush and heat with clay in a rotary kiln Add water 2 used to neutralise acidic soils 3 used for windows Mix with sand, gravel and water Concrete used in buildings

11. Question 10 This question is about chemical compounds. Match words from the list with the numbers 1. 4 in the sentences. atoms compounds elements molecules Quicklime and slaked lime are..... 1...... Quicklime is made up of the..... 2..... calcium and oxygen. The greater the number of carbon..... 3..... in hydrocarbons, the larger the..... 4......

12. Question 11 A student heats 6.0 grams of green copper carbonate in a test tube. The copper carbonate decomposes, giving off a gas. A black powder is left in the tube. The gas given off when the copper carbonate is heated is... 1 carbon dioxide. 2 carbon monoxide. 3 copper oxide. 4 oxygen.

13. Question 12 A student heats 6.0 grams of green copper carbonate in a test tube. The copper carbonate decomposes, giving off a gas. A black powder is left in the tube. What is the black powder left in the test tube? 1 carbon 2 copper 3 copper oxide 4 copper sulfate