🔍 Key Concepts

• Sensible heat vs latent heat • What happens to water temperature when it is heated but does not change state (still liquid water) • Definitions of latent heat during phase changes (ice to water, water to steam)

💭 Think About

• Ask yourself: in this question, is the water changing phase (liquid to solid or liquid to gas), or just getting hotter as a liquid? • Which type of heat is associated with a measurable temperature change on a thermometer? • Which type of heat is added when a substance is melting or boiling but its temperature stays the same until the phase change is complete?

✅ Before You Answer

• Verify whether the question describes any change of state (melting, freezing, boiling, condensing) or just a temperature rise. • Match the term whose definition is heat that causes a temperature change that you can read on a thermometer. • Eliminate the term that is specifically defined as heat used only for phase change at constant temperature.