Question

In a chemical reaction, new substances are formed.These substances are different from those which underwent the reaction. Now, if asubstance cannot be broken down further by chemical reactions, by cooling, heating,or by electrolysis, it is called ‘element’. Sulphur is an element. So is iron. Carbon, too,is an element. The smallest unit of an element is atom. A sample of an element contains only one kind of atoms. The atom of an element remains unaffected by physical changes in the element. For example, an atom of liquid sulphur would be exactly the same as the atom of solid or vapour sulphur.Although we have an infinite variety of substances in the universe, the number of elements forming these substances is limited. There are no more than 92 naturally occurring elements. An important classification of elements is in terms of metals and non-metals. Most of the elements are metals. Less than 20 are non-metals. A few are metalloids which possess characters of both metals and non-metals. Q3a). Materials having qualities of both metals and non-metals are 1 point Captionless Image


(a) alloys (b) metalloids (c) noble metals (d) none of these​

Answer 1

Answer:

Metalloids is the answer