Question

(Textbook Page 127; Lesson 24)
Aim: To pound solids of different types and make their powder.
Materials: Mortar and pestle, chalk, small stones, groundnuts.
Method
(1) Choose different solid substances.
(2) Place them in mortar and with the help of pestle try to pound them, one by one.
(3) At last. check whether you can pound a piece of rock.
(4) Note, which of the substances were easy to pound.
(5) Also observe whether you could pound the substance completely to obtain powder.
(6) Note if a substance is hard or brittle,
Observations: All Substances we cound us
made up of verytiny patioals. Like -
powder,
Inference:
(1) Any
substance is made up of
cuotonan
betanres​

Answer 1

Explanation:

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