Identify each of the following changes of state as melting, freezing, sublimation, or deposition: c. Heat is removed from 125 g of liquid water at 0 °C.

Verified step by step guidance

1. Identify the initial state of the substance: The problem states that we have liquid water at 0 °C.
2. Determine the process involved when heat is removed from a liquid: Removing heat from a liquid typically results in the liquid changing to a solid state.
3. Recognize the change of state: When liquid water turns into ice, this process is known as freezing.
4. Consider the temperature: Since the water is at 0 °C, which is the freezing point of water, removing heat will cause it to freeze.
5. Conclude the change of state: Therefore, the change of state when heat is removed from liquid water at 0 °C is freezing.

Key Concepts

Melting

Melting is the process where a solid turns into a liquid as it absorbs heat. This occurs at a specific temperature known as the melting point. For example, ice melts into water at 0 °C when heat is added.

Freezing

Freezing is the transition from a liquid to a solid state, occurring when heat is removed from the liquid. This process also happens at a specific temperature, the freezing point, which for water is 0 °C. Thus, when water loses heat, it solidifies into ice.

Heat Transfer

Heat transfer is the movement of thermal energy from one object or substance to another. In the context of phase changes, removing heat from a substance can lead to changes in state, such as freezing. Understanding heat transfer is crucial for predicting how substances behave under varying temperature conditions.