Question

I NEED HELP ASAP

A group of students thinks that boiling water is an example of a

chemical change. Are they correct? Write a response in complete

sentences.

3)

Be sure to answer these questions in your response:

• What evidence is leading them to think that boiling water

is a chemical change?

• Is water boiling a chemical change or a physical change?

• Provide evidence to support the correct answer.

Answer 1

Answer: Water that has been heated to the point of boiling has undergone a physical change because nothing else about the water has altered. The water's bubbles and steam are the only physical signs that they can find, and since steam is simply water that has evaporated, it is still water. A chemical change occurs when a material transforms into a different one, such as when sugar is heated and turns into caramel. Boiling water causes a physical change.