1.32 Calcium carbonate reacts with dilute hydrochloric acid. The equation for the reaction is shown. CaCO3 + 2HCl — > CaCl 2 + H2O + CO2 1.00 g of calcium carbonate is added to 50.0 cm3 of 0.0500 mol / dm3 hydrochloric acid. Which volume of carbon dioxide is made in this reaction?   (1)

1.8 The diagram shows an unsuccessful experiment to nickel plate a pan. What change is necessary to nickel plate the pan?   (1)   Right-click on the button to open the data booklet in a new tab.    

1.12 An aqueous solution of copper (II) sulphate was made by adding excess copper (II) oxide to dilute sulphuric acid. The mixture was heated, stirred, and then filtered. (1)   Right-click on the button to open the data booklet in a new tab.        What was the pH of the acid before adding the copper (II) oxide and of the solution after filtration?     pH of acid before adding copper (II) oxide pH of solution after filtration A greater than 7 7 B greater than 7 less than 7 C less than 7 7 D less than 7 greater than 7

1.34 Which is a chemical change? (1)

 1.40 Four different food colourings are analysed using chromatography. The results are shown on the chromatogram. The diagram is not drawn to scale. Which food colouring contains a component with an Rf value of 0.3? (1)   Right-click on the button to open the data booklet in a new tab.       

1.36 Which pair of elements reacts together most violently? (1)

1.14 Three gas jars contain carbon dioxide, hydrogen, and oxygen. Which one of the following tests could be used to discover which gas is in each jar? (1)

1.24 The diagram shows a cup of hot tea. (1)   Right-click on the button to open the data booklet in a new tab.        Which row describes the water particles in the air above the cup compared with the water particles in the cup?   Moving faster Closer together A Yes No B Yes Yes C No No D No Yes

1.31 Which statement describes the structure of copper? (1)  

1.17 Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? (1)       can be used as a catalyst   conducts electricity when solid has low density   forms coloured compounds   A Yes Yes No Yes B Yes Yes Yes No C Yes No Yes Yes D No Yes Yes Yes