Chemical Changes: Crash Course Kids #19.2
Updated: February 24, 2025
Summary
Baking is a fun way to explore science through chemistry, where different substances can undergo changes that are irreversible. Mixtures like fruit salad can be separated, but chemical changes create new substances that cannot be reversed, often changing color and releasing heat. Evidence of a chemical change when baking a cake includes color changes, smells, gases released, and irreversible transformations such as water becoming part of the cake. Chemical changes in baking ultimately yield delicious results, like fluffy cakes, through the application of heat and other key processes.
Introduction to Science through Baking
Baking can be a fun way to learn about science as it involves chemistry, the science of different kinds of matter and how they can change. Both baking and chemistry require careful timing, measuring, and result in the formation of mixtures.
Mixtures and Chemical Changes
Mixtures like fruit salad can be separated back into their original substances, while chemical changes create new substances that can't be undone. Chemical changes often change the color of matter and may involve the release or absorption of heat.
Examples of Chemical Changes
Burning is an example of a chemical change that can't be undone and often changes the color of matter. Chemical changes can yield yummy results like making cake batter and turning it into a fluffy cake through the application of heat.
Identifying Chemical Changes in Baking
When baking a cake, evidence of a chemical change includes color changes, smells, gases released, and irreversible transformations like water mixed in the batter becoming part of the cake. Other signs include the presence of carbon dioxide and changes in texture.
FAQ
Q: What are the similarities between baking and chemistry?
A: Both baking and chemistry require careful timing, measuring, and result in the formation of mixtures.
Q: How can mixtures like fruit salad be separated back into their original substances?
A: Mixtures like fruit salad can be separated back into their original substances by physical means.
Q: What is the difference between mixtures and chemical changes?
A: Mixtures can be separated back into their original substances, while chemical changes create new substances that can't be undone.
Q: What are some signs of a chemical change when baking a cake?
A: Signs of a chemical change when baking a cake include color changes, smells, gases released, irreversible transformations, the presence of carbon dioxide, and changes in texture.
Q: How can chemical changes yield yummy results in baking?
A: Chemical changes in baking can yield yummy results like making cake batter and turning it into a fluffy cake through the application of heat.
Q: What is an example of a chemical change that can't be undone?
A: Burning is an example of a chemical change that can't be undone and often changes the color of matter.
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