Final answer:
In summary, b and d are chemical changes because they result in new substances, while c and e are physical changes and properties respectively because they involve changes in the state or energy of the substances without altering their chemical identities.
Step-by-step explanation:
To label each of the provided statements as a physical (P) or chemical (C) change or property: a. Incorrect: One cm of water has a mass of one gram. (This is a physical property as it describes a measurement of the water, not a change in its composition.) b. Burning hydrogen in the presence of oxygen produces water. (This is a chemical change as it results in the formation of a new substance, which is water.) c. Candle wax will melt when heated gently. (This is a physical change as it is a change of state from solid to liquid without a change in chemical composition.) d. An iron nail left outside for a year will rust. (This is a chemical change since rusting involves iron reacting with oxygen creating a new compound, iron oxide.) e. To raise the temperature of 1 kg of lead by 1°C requires 130 joules of energy. (This describes the specific heat capacity which is a physical property of lead.) f. If ice is heated enough, it will change to steam. (The transition from ice to steam involves two physical changes: melting of ice to water, and boiling of water to steam, with no change in chemical composition.). To clarify the writing mistakes in the question, Option A represents a physical property, not a chemical one. Additionally, Option F should be classified as a physical change.