measurement and matter\ndistinguishing chemical and physical change\nchange 1\nchange 1 is:\nimpossible\na…
measurement and matter\ndistinguishing chemical and physical change\nchange 1\nchange 1 is:\nimpossible\na physical change\na chemical change\nchange 2\nchange 2 is:\nimpossible\na physical change\na chemical change\nchange 3\nchange 3 is:\nimpossible\na physical change\na chemical change
Answer
Explanation:
Step1: Recall the definitions
A physical change involves a change in physical state or appearance without changing the chemical composition of the substance. A chemical change involves the formation of new substances with different chemical compositions.
Step2: Analyze Change 1
The molecules in the initial and final states are the same. Only the arrangement has changed. So it's a physical change.
Step3: Analyze Change 2
The initial molecules are broken - down into individual atoms and new molecules are formed. This indicates a chemical change.
Step4: Analyze Change 3
The molecules in the initial and final states are the same. Only the arrangement has changed. So it's a physical change.
Answer:
Change 1 is: a physical change Change 2 is: a chemical change Change 3 is: a physical change