Two of the following processes are examples of chemical changes and two of them are examples of physical changes - Junior Cycle Science - Question e - 2019
Question e
Two of the following processes are examples of chemical changes and two of them are examples of physical changes.
Underline the two processes which are examples of c... show full transcript
Worked Solution & Example Answer:Two of the following processes are examples of chemical changes and two of them are examples of physical changes - Junior Cycle Science - Question e - 2019
Step 1
Rusting of iron
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Answer
Rusting of iron is a chemical change as it involves the reaction of iron with oxygen in the presence of moisture to form iron oxide (rust). This process alters the chemical composition of iron.
Step 2
Burning of paper
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Answer
Burning of paper is also a chemical change because it involves combustion, resulting in new substances such as ash, carbon dioxide, and water vapor, thus changing its chemical nature.
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