Question

Which of the following could cause a physical change in a solid piece of sodium metal

O A putting it in water
OB.
O C.
O D.
exposing it to chlorine gas
hitting it with a hammer
dissolving in acid

Answer 1

Putting sodium metal in water causes a physical change by dissolving and forming sodium ions.

Step-by-step explanation:

The correct answer is:

- Putting it in water

When a solid piece of sodium metal is placed in water, a chemical reaction occurs that results in the production of hydrogen gas and sodium hydroxide. This is a chemical change, but it also leads to a physical change in the sodium metal as it dissolves and forms sodium ions in the water.

While hitting it with a hammer and exposing it to chlorine gas are also examples of chemical changes, they do not directly cause a physical change in the solid sodium metal. On the other hand, dissolving in acid is another chemical change that results in the production of a salt and water, with no direct impact on the physical state of the sodium metal.

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