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1.1

Minor Versionm

by Suhail Ahanger

Introduction

Physical Change and Chemical Change example .

Video Overview

    • Handle the Bunsen Burner carefully.

    • Do not touch the hot Test Tube.

    • Always use a test tube holder to hold the test tube while heating .

  1. Keep  Sugar, Test tube and a test tube holder ready/cloth .
    • Keep Sugar, Test tube and a test tube holder ready/cloth .

    • With the help of spoon , transfer sugar crystals to test tube .

    • Hold the test tube with test tube holder/cloth .

    • Keep the Bunsen Burner/Cooking gas ready, and test tube containing sugar.

    • Heat the test tube over Bunsen Burner/Cooking Gas .

    • Heat till it becomes Black-Brown liquid .

    • No black - brown coloured liquid. Amount of sugar is too less.

    • Sugar is not melting. Flame temperature not enough to melt the sugar

    • What happens to sugar after heating ? what change of state did you observe?

    • What happen if you heat Toffees and chocolates ?

Finish Line

Procheta Mallik

Member since: 05/02/2017

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