Metals and Non-Metals
Metals and Non-Metals
Substance which cannot be broken down into two (or more) simpler substances by chemical reactions (by applying heat, light or electricity) is called an element. For example, iron is an element because it cannot be broken down into two or more simpler substances. by chemical reactions of applying heat.
Which of the following are correct : (a) The smallest particle of an element is called molecule. (b) Iron is an element because it cannot be broken down into two or more simpler substances. (c) Metals are malleable and ductile elements which are good conductors of heat and electricity. | |||
| Right Option : C | |||
| View Explanation | |||
Complete the reaction: | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) An element is a substance which is made up of only one kind of atoms. (b) Non-metals are not lustrous or shiny, they are dull in appearance. (c) Every element is represented by a 'symbol'. | |||
| Right Option : D | |||
| View Explanation | |||
Students / Parents Reviews [20]
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