Which of the Following Observations Is/are Examples of Physical Change $^{\circ}$

question 9

Multiple Choice

Which of the following observations is/are examples of physical change?
1) The density of water decreases when it solidifies.
2) Aluminum melts when heated above 660 $^{\circ}$ C.
3) Hydrogen peroxide (H₂O₂) decomposes to water and oxygen.

• A) 1 only
• B) 2 only
• C) 3 only
• D) 1 and 2
• E) 1,2,and 3

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Definitions:

Cash Discount

A reduction in the invoice amount by the seller, granted to the buyer for early payment within a specified period.

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The relationship between the cost of credit for a borrower and the default risk of the borrower, indicating how the cost of borrowing money increases with higher risk.