Pour some lemon juice into the bottle and cover the mouth of the bottle with a balloon.Īfter some time, you will notice that the balloon gets filled with a gas.This is an acid-base neutralization reaction. Mix it until the baking soda is completely dissolved. Making balloons from bottles is a great experiment to showcase chemical changes. Though it may seem colorless now, you must remember that this is no longer water, but rather a mixture of water, food color and bleach, which has a different chemical composition from water altogether. Mix it thoroughly with a stirring rod until the color is uniformly distributed.Īdd about 30 ml bleach into the mixture and in a matter of seconds, you will notice that the color disappears. Take 200 ml of water in a beaker and add 2 drops of food coloring to it. Bleachingīleaching is a great experiment choice to show that chemical changes can also cause change in colors. This is due to the action of the acid in the apple with the air and moisture around. You will find that the surface of the apple now has a brown-yellow color. There are quite a few experiments that can be carried out at home or in school laboratories to show chemical changes. This happens because the acid in apple reacts with the atmospheric humidity and other trace elements present and gives the apple surface a brownish-yellow color. When you cut it and keep it in the open for some time, you will notice that it has a brownish hue on its surface. Their chemical composition may change and the final product may have different properties as compared to the original components. What are Chemical Changes?Ī chemical change is one where there are changes in the chemical properties of the components. Let us try to understand more about physical changes, how to identify them and their basic features. Further, their differing properties also has a major role to play in our understanding and knowledge in the field of Chemistry. With their individual features and properties, they have different affect on our daily life. The changes we see around us can be classified into physical and chemical changes.
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