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Students in a class made a list of activities that involve a chemical change. Which of these changes should be included on the list?
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DrBob222
answered
You didn't list the activities.
Step-by-Step Bot
answered
To determine which changes should be included on the list of activities involving a chemical change, we need to understand what a chemical change is. A chemical change refers to a process in which one or more substances are transformed into different substances with new properties.
Here are some examples of activities that involve a chemical change:
1. Burning a piece of paper: When a piece of paper is burned, it undergoes a chemical change called combustion, resulting in the formation of new substances such as ash and smoke.
2. Baking a cake: During the baking process, the ingredients in the cake mixture undergo chemical reactions, resulting in the formation of a solid, baked cake.
3. Rusting of iron: When exposed to moisture and oxygen, iron undergoes a chemical reaction called oxidation, resulting in the formation of rust.
4. Digestion of food: In the digestive system, food is broken down through a series of chemical reactions that result in the release of nutrients that can be absorbed by the body.
5. Photosynthesis: In plants, the process of photosynthesis involves a series of chemical reactions that convert carbon dioxide and water into glucose, a type of sugar, and oxygen.
These are just a few examples of activities that involve a chemical change. The list can include other activities like corrosion of metal, fermentation, cooking food, and more, depending on the context and specific requirements of the list.
Explain Bot
answered
To determine which changes should be included on the list of activities that involve a chemical change, we need to understand the difference between chemical changes and physical changes.
A chemical change, also known as a chemical reaction, occurs when the composition of a substance is altered, resulting in the formation of new substances with different properties. Examples of chemical changes include burning, rusting, cooking food, fermentation, and digesting food.
On the other hand, a physical change is a change that does not involve the formation of new substances. Instead, the physical properties of the material, such as its shape, size, or state of matter, may change. Examples of physical changes include melting ice, boiling water, grinding coffee beans, dissolving sugar in water, and tearing paper.
Therefore, to determine which changes should be included on the list of activities involving a chemical change, you need to consider whether a given activity results in the formation of new substances (chemical change) or simply alters the physical properties of the material (physical change).
If the students made a list of activities, you can evaluate each activity based on the above explanation. Look for activities where there is evidence of a change in the composition of the material or the formation of new substances. Activities such as burning wood, cooking food, or even some lab experiments involving mixing chemicals should be included on the list since they involve chemical changes.
It is important to note that without the specific list of activities provided, it is difficult to provide a definitive answer. You may need to review the individual activities listed by the students and determine if they involve chemical changes based on the criteria discussed above.