The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.
When cold milk is mixed with hot tea the final temperature of the mixture depends on the specific heat capacities, masses, and the starting and final temperatures of the ingredients. Once the drink is made it cools down due to conduction, convection and radiation, transferring energy from the hot tea to the cooler surroundings. Understanding these processes requires a knowledge of the latent heat of vaporisation and Stefan’s law. The overall rate of temperature change depends on the temperature difference between the tea and its surroundings.
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