Water's ability to split into hydrogen and oxygen, and its tendency to react with certain metals, classify as chemical properties. Being liquid at room temperature and having a density of 1.0 g/cm3 are physical properties of water.
To classify each property of water as a physical property or a chemical property, let's examine each one:
Can be split into hydrogen and oxygen: This is a chemical property because it describes water's ability to undergo a chemical change, specifically electrolysis.
Is liquid at room temperature: This is a physical property because it describes the state of matter of water under standard conditions without changing its composition.
Has a density of 1.0 g/cm3: Density is a physical property as it is a characteristic that can be measured without altering the substance's chemical identity.
Reacts with certain metals: This is a chemical property because it refers to water's ability to chemically interact with metals, potentially forming new substances, such as hydroxides or hydrogen gas.