NCERT Solution for Class 10 Science Chapter 3
Metals and Non-metals
NCERT Book Session-2022-2023
Exercises Questions Answers
Page No-56
Questions No-5
You are given a hammer, a battery, a bulb, wires and a switch.
(a) How could you use them to distinguish between samples of metals and non-metals?
(b) Assess the usefulness of these tests in distinguishing between metals and non-metals.
(a) Suppose on hammering or beating the sample it converts into sheets, then it is a metal otherwise a non-metal because metals are malleable whereas non metals are not. If we use the battery, bulb, wires, and a switch to make up a circuit. If these samples conduct electricity, then it is a metal, otherwise a non-metal.
(b) As these tests are based on the physical properties. No chemical reactions occurs or are required in these tests. Therefore, the above tests are useful in distinguishing between metals and nonmetals.
(a) With the hammer, we can beat the sample and if it can be beaten into thin sheets (that is, it is malleable), then it is a metal otherwise a non-metal. Similarly, we can use the battery, bulb, wires, and a switch to set up a circuit with the sample. If the sample conducts electricity, then it is a metal otherwise a non-metal.
(b) The above tests are useful in distinguishing between metals and non-metals as these are based on the physical properties. No chemical reactions are involved in these tests.
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