How do you classify the following changes as (a) Baking of breads in oven (b) Cutting of bread into pieces
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Explanation:
A. It is a chemical change because by baking the dough of the bread in the oven, you are activating the yeast, which will change it's properties and cause it to rise, Hence the change in the general make up from dough to bread.
B. Is a physical change because while you are changing the physicality of the bread, the properties remain the same.
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( a) it is a chemical change. The transformation of flour into gluten chains creates a new substance with different properties, and an altered chemical composition. (b) it is a physical change
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