In the electrolytic refining of a metal $M$, what would you take as the anode, the cathode and the electrolyte ?
In the electrolytic refining of a metal $M$ :
Anode $\rightarrow$ Impure metal $M$
Cathode $\rightarrow$ Thin strip of pure metal $M$
Electrolyte $\rightarrow$ Solution of salt of the metal $M$
Give reasons : Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.
Differentiate between metal and non-metal on the basis of their chemical properties.
Name two metals which are found in nature in the free state.
You are given a hammer, a battery, a bulb, wires and a switch.
$(a)$ How could you use them to distinguish between samples of metals and non-metals ?
$(b)$ Assess the usefulness of these tests in distinguishing between metals and non-metals.
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.