Important Questions on Metals and Non-metals
Write the important physical properties of metals and mention the exceptions, if any. 
Write any four important physical properties of non-metals, their characteristics and exceptions, if any. Write a short note on the occurrence of various non-metals. What is an alloy? What are its advantages? Explain some methods to prevent corrosion. Differentiate between: Corrosion and rusting What is the difference between malleability and ductility? Sodium and phosphorus are both very reactive. Why is sodium stored in kerosene and phosphorus in water? 
