Exam, Class-8th, Sci., Chap. 7, Metals and Nonmetals Q1. Fill in the blanks. Most of the metals have up to ... electrons in their outermost shell. Sodium and potassium are soft and can be easily cut by a... Pure gold is ... carat gold. Elements such as arsenic, silicon, and germanium that have properties intermediate between metals and nonmetals are called... Graphite, an allotrope of carbon, is a very good conductor of... Q2. State whether true or false. Metals are generally good conductors of heat and electricity. Nonmetals are ductile and malleable. Sodium metal is kept immersed in kerosene. Gold and silver are known as noble metals because they react very rapidly with dilute acids. The oxides of nonmetals are acidic in nature. Q3. Match the following. Group 'A' (Element / Substance) Group 'B' (Property / Characteristic) 1. Sod...