............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ....................................................................................................................................... [3] (c) State one use of aluminium. Give a reason why it is used for this purpose. use .............................................................................................................................................. reason ........................................................................................................................................[2] Practice questions for chemistry by HNH Explain how this diagram shows that the reaction is endothermic. ............................................................................................................................................. ....................................................................................................................................... [1] Answer these questions using only the information in the table. Practice questions for chemistry by HNH (a) State which substance, A, B, C or D, is best used in the core of an overhead electricity cable. i. Explain your answer. substance ................................................................................................................................... explanation ................................................................................................................................. .....................................................................................................................................................[3] ii. State which substance, A, B, C or D, is best used for the tip of a drill. Explain your answer. substance ................................................................................................................................... explanation ................................................................................................................................. .....................................................................................................................................................[3] (ii) Put the three metals, copper, nickel and zinc, in order of reactivity. most reactive ......................................... ......................................... least reactive ......................................... [1] Practice questions for chemistry by HNH Practice questions for chemistry by HNH Practice questions for chemistry by HNH Practice questions for chemistry by HNH
