Answer the following in brief:
Classify the changes of water into ice and water into steam as physical or chemical changes. Explain your answer.
The changes of water to ice and water to steam are .
This is because . In the first case, water changes from a , and in the second case, water changes from a .
During both changes, . The substance remains water (\(H_{2}O\)) before and after the change. These changes are also reversible, as ice can melt back into water and steam can condense back into water.
Therefore, the changes of water to ice and water to steam are physical changes because .