To identify the different between temperature and also heat To identify the various scales provided to measure up temperature

The ide of temperature might seem acquainted to you, however many human being confuse temperature with heat. Temperature is a measure up of how hot or cold things is relative to one more object (its thermal energy content), vice versa, heat is the flow of thermal energy in between objects with different temperatures. Temperature is a measure up of the typical kinetic power of the particles in matter. In daily usage, temperature indicates a measure up of how hot or cold an object is. Temperature is an essential parameter in positiveeast.orgistry. Once a substance transforms from solid come liquid, the is since there to be in rise in the temperature the the material. Positiveeast.orgical reactions commonly proceed quicker if the temperature is increased. Many unstable materials (such together enzymes) will certainly be viable longer at lower temperatures.

You are watching: The temperature at which all molecular motion stops is Figure $$\PageIndex1$$: The glow charcoal ~ above the left to represent high kinetic energy, if the snow and ice on the appropriate are that much reduced kinetic energy.

Three different scales are commonly used to measure temperature: Fahrenheit (expressed as °F), Celsius (°C), and Kelvin (K). Thermometers measure up temperature by using materials that increase or contract once heated or cooled. Mercury or alcohol thermometers, because that example, have actually a reservoir of liquid that broadens when heated and contracts once cooled, for this reason the liquid obelisk lengthens or shortens together the temperature of the liquid changes.   ## The Kelvin Scale

The Kelvin temperature scale is named after Scottish physicist and also mathematician lord Kelvin (1824 - 1907). It is based upon molecular motion, v the temperature the $$0 \: \textK$$, also known as pure zero, gift the suggest where every molecular movement ceases. The freezing point of water top top the Kelvin scale is $$273.15 \: \textK$$, while the boiling point is $$373.15 \: \textK$$. Notice that there is no "degree" supplied in the temperature designation. Uneven the Fahrenheit and Celsius scales where temperatures are referred to as "degrees $$\textF$$" or "degrees $$\textC$$", we simply designated temperature in the Kelvin scale as kelvins.

See more: What Is The Difference Between A Dream And A Vision, What Are Dreams And Visions Figure $$\PageIndex1$$: A compare of the Fahrenheit, Celsius, and Kelvin Temperature Scales. Since the difference between the freezing point of water and the boiling suggest of water is 100° ~ above both the Celsius and also Kelvin scales, the dimension of a degree Celsius (°C) and a kelvin (K) are exactly the same. In contrast, both a degree Celsius and also a kelvin space 9/5 the dimension of a degree Fahrenheit (°F).

Example $$\PageIndex1$$: Temperature Conversions

A student is ill v a temperature that 103.5°F. What is she temperature in °C and also K?

Solution

Converting native Fahrenheit come Celsius needs the use of Equation \ref3.10.3: