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Identify a true statement among the foll...

Identify a true statement among the following.

A

In a physical change composition changes

B

Chemical change can easily be reversed

C

Physical change is a temporary change

D

In a chemical change no new substance(s) is/are formed

Text Solution

AI Generated Solution

The correct Answer is:
To identify a true statement among the given options, we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Analyze the First Statement: "These physical changes, composition changes."** - Physical changes do not alter the chemical composition of a substance. For example, when water freezes to become ice, it remains H2O. Therefore, this statement is **false**. 2. **Analyze the Second Statement: "My chemical change can be reversed."** - Chemical changes typically result in the formation of new substances and are often irreversible. For example, burning wood creates ash and gases, which cannot be converted back into wood. Thus, this statement is **false**. 3. **Analyze the Third Statement: "My physical change is a temporary change."** - Physical changes are often reversible and do not change the substance's composition. For instance, water can freeze into ice and then be melted back into water. This indicates that physical changes are indeed temporary. Therefore, this statement is **true**. 4. **Analyze the Fourth Statement: "My chemical change, no new substance is formed."** - Chemical changes always result in the formation of new substances. For example, when iron rusts, it forms iron oxide, a new substance. Hence, this statement is **false**. ### Conclusion: The true statement among the options is: **"My physical change is a temporary change."**

To identify a true statement among the given options, we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Analyze the First Statement: "These physical changes, composition changes."** - Physical changes do not alter the chemical composition of a substance. For example, when water freezes to become ice, it remains H2O. Therefore, this statement is **false**. 2. **Analyze the Second Statement: "My chemical change can be reversed."** ...
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