An Experience How can a chemical change be observed? ( virtual lab)
10 March, 2024

An Experience How can a chemical change be observed? ( virtual lab)

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the goal:


Explanation of how we can infer a chemical change has occurred.


Materials and tools:


Ammonia solution - Distilled water - Glass beaker - Universal indicator - Effervescent tablets.


Steps:


1- Put a quantity of distilled water in the glass.


2- Add drops of ammonia solution into the water in the glass, and observe what happens.


3- Put drops of universal indicator into the solution and observe the color that forms.


4- Add an effervescent tablet to the solution and observe what happens.


Note:


We observe a colour change from blue to orange, and we notice the formation of foam from the effervescent tablet, indicating the presence of gas.


Conclusion:


We can observe chemical changes through a change in color, the occurrence of a reaction or fizzing, or a change in temperature.


Experiment for yourself with Vlaby Virtual lab platform.

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