Which of the following describe a chemical change? (Select All That Apply)ResponsesA plant using photosynthesis to make food.A plant using photosynthesis to make food.Digesting the giant Jersey Mike's sub you ate for lunch last Saturday.Digesting the giant Jersey Mike's sub you ate for lunch last Saturday.Mixing sugar and kool-aid mix to make blue raspberry kool-aid.Mixing sugar and kool-aid mix to make blue raspberry kool-aid.Some old food getting stinky in the trash.Some old food getting stinky in the trash.
Question
Which of the following describe a chemical change? (Select All That Apply)ResponsesA plant using photosynthesis to make food.A plant using photosynthesis to make food.Digesting the giant Jersey Mike's sub you ate for lunch last Saturday.Digesting the giant Jersey Mike's sub you ate for lunch last Saturday.Mixing sugar and kool-aid mix to make blue raspberry kool-aid.Mixing sugar and kool-aid mix to make blue raspberry kool-aid.Some old food getting stinky in the trash.Some old food getting stinky in the trash.
Solution
The options that describe a chemical change are:
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A plant using photosynthesis to make food: This is a chemical change because it involves the transformation of carbon dioxide and water into glucose (food for the plant) and oxygen, which is a new substance.
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Digesting the giant Jersey Mike's sub you ate for lunch last Saturday: This is also a chemical change. Digestion involves breaking down food into simpler substances that your body can use. This process involves chemical reactions.
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Some old food getting stinky in the trash: This is a chemical change as well. As the food decomposes, it breaks down into different substances, which can produce a foul smell.
Mixing sugar and kool-aid mix to make blue raspberry kool-aid is not a chemical change. This is a physical change because you're just dissolving the sugar and kool-aid mix in water. The substances are not chemically altered.
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