1. Advancements in communication technology, like the internet, have enabled seamless interaction between global markets. For instance, e-commerce platforms like Amazon facilitate international trade.
2. Innovations in transportation, such as container ships and air cargo, have reduced costs and increased the efficiency of global trade, linking producers and consumers worldwide.
(i) Study the diagram and name the parts marked as A, B, C, and D.
(ii) Write the function of A and C.
Samples of four metals A, B, C, and D were added one by one to the following solutions. The results obtained were tabulated as follows:
Use the table above to answer the following questions about metals A, B, C, and D:
(i) Which is the least reactive metal?
(ii) What would be observed if C is added to a solution of copper sulphate?
(iii) Arrange the metals A, B, C, and D in the order of their decreasing reactivity.