Which of the following is a physical change?

A newspaper burns when placed in a fire.
An iron chair rusts when left outside.
A sample of water boils and releases gas.
A plant changes carbon dioxide and water into sugar.
Electricity is used to split water molecules into hyrdogen and oxygen

Question

Which of the following is a physical change?
 
  
 A newspaper burns when placed in a fire. 
 An iron chair rusts when left outside. 
 A sample of water boils and releases gas. 
 A plant changes carbon dioxide and water into sugar. 
 Electricity is used to split water molecules into hyrdogen and oxygen

anonymous · Answer

Which one do you think it is? Want to know your answer before I tell you mine.

anonymous · Answer

D. A plant changes carbon dioxide into water and sugar

anonymous · Answer

i will say a or d

bioepic · Answer

It is  A sample of water boils and releases gas.
This is because phase change is considered a physical change (water goes from liquid to gas).

anonymous · Answer

Thank you all for your help

bioepic · Answer

No problem!