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Line 51: − **#what is the state of Sodium chloride taken in the test tube?<br>2.What is the state of water added to the test tube? <br>3.What is the state of Sodium chloride just after the addition of water?+ + + + +
Chemical reactions and their types (view source)
Revision as of 12:18, 25 June 2015
, 12:18, 25 June 2015→Activity No 1
**10 minutes
**10 minutes
* '''Materials/ Resources needed'''
* '''Materials/ Resources needed'''
**Sodium chloride-NaCl <br> Distilled water-H2O <br> Test tube <br> Test tube holder <br> Spirit laamp
**Sodium chloride-NaCl <br> Distilled water-<math>H_2O</math> <br> Test tube <br> Test tube holder <br> Spirit laamp
* '''Prerequisites/Instructions, if any'''
* '''Prerequisites/Instructions, if any'''
**do not forget to use heat resistant gloves before starting the demonstration
**do not forget to use heat resistant gloves before starting the demonstration
**Take clean dry test tube and add 5g of NaCl then add about 5ml of water to it to prepare sodium cloride solution.Heat the solution using spirit lamp to evaporate the water to get the sodium chloride in solid state.<br> You may collect the vapours of water in a test tube and condense it to get water in liquid state.
**Take clean dry test tube and add 5g of NaCl then add about 5ml of water to it to prepare sodium cloride solution.Heat the solution using spirit lamp to evaporate the water to get the sodium chloride in solid state.<br> You may collect the vapours of water in a test tube and condense it to get water in liquid state.
* '''Developmental Questions (What discussion questions)'''
* '''Developmental Questions (What discussion questions)'''
#what is the state of Sodium chloride taken in the test tube?
#What is the state of water added to the test tube?
#What is the state of Sodium chloride just after the addition of water?
#what happens to the Sodium chloride in the test tube when the test tube is thoroughly Shaken?
#what changes do you observe when the test tube with Sodium chloride solution is boiled
* '''Evaluation (Questions for assessment of the child)'''
* '''Evaluation (Questions for assessment of the child)'''
* '''Question Corner'''
* '''Question Corner'''