(i) The chapter states: 'A reliable measure of hotness (or coldness) of a body is its temperature.' Temperature is the quantity that determines how hot or cold a body is. (ii) The chapter explains that clinical thermometers are designed to measure human body temperature, which ranges between 35 °C and 42 °C. Ice-cold water has a temperature of 0 °C, which is outside the range of a clinical thermometer. (iii) The chapter states: 'On this scale, the unit of temperature is degree Celsius and is denoted by °C.' The Celsius scale is commonly used for measuring temperature.