OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Combining baking soda and vinegar.
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baking a cake
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making iced tea
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making a milkshake
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Detailed explanation-1: -As you bake a cake, you are producing an endothermic chemical reaction that changes ooey-gooey batter into a fluffy, delicious treat!
Detailed explanation-2: -Baking a cake is a chemical change because it takes a batch of ingredients and rearranges them (with the help of heat) to form a new substance (cake). The new substance cannot be reserved for its original form.
Detailed explanation-3: -Dissolving and mixing: Simple forms of dissolving and mixing are considered physical changes, but mixing the ingredients of a cake is not a simple mixing process. A chemical change starts to occur when the ingredients are mixed, forming new substances.
Detailed explanation-4: -Therefore, (a) Growth of a plant, (b) Rusting of iron, (d) Cooking food, (e) Digestion of food, and (g) Burning of a candle are chemical changes.