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Class 8 Chapter – 04 Metals and Non - metals Study Notes 8. The metal most used in the construction industry is a. iron. b. copper. c. aluminum. d. tin. Get Revision notes of Class 8 th Science Chapter 4 Materials : metals and non-metals to score good marks in your Exams. Our notes of Chapter 4 MaterialsPhysical properties of Metals: · Metals are solids at room temperature, except mercury, which is liquid at room temperature. · They are generally hard and strong Metals are described as chemical elements that readily lose valence electrons to form positive ions (cations). Examples: Aluminium, copper, iron, tin, gold. Download Materials : Metals and Non-metals CBSE Class 8 Science Chapter 4 notes PDF for free. Secure good marks by referring NCERT Class 8 Materials 1) Occurrence of metals and non metals :- Out of the 92 naturally occuring elements 70 are metals and about 22 are nonmetals. · 2) Metallurgy :- · 3) Physical Read and download free pdf of Class 8 Science Metals and Non Metals Exam Notes. Students and teachers of Class 8 Science can get free advanced study