Heat and Temperature
Let’s talk about heat and temperature ! Heat is like warmth, and temperature tells us if something is hot or cold. Lets see one by one about heat and temperature.
Heat Definition
Heat is a form of energy which can be transferred between two or more systems or between system and its surrounding by the change of temperature.
Heat tends to move from higher temperature region to lower temperature region. Unit of heat is Joule in SI system and calorie in CGS system.
Temperature Definition
Temperature is the degree of hotness of body.
When body is heated its temperature increases and when body is cooled its temperature decreases. Unit of temperature in SI system as well as CGS system is Kelvin.
Measure of Temperature
The temperature of body is measured by using an instrument called thermometer.
Following are some scales which are used to measure the temperature
- Kelvin Scale: The lower fixed point is 273.15 K and upper fixed point is 373.15 K.
- Celsius Scale: The lower fixed point is 0 ℃ and upper fixed point is 100 ℃.
- Fahrenheit Scale: The lower fixed point is 32 ℉ and upper fixed point is 212 ℉.
- Reaumur Scale: The lower fixed point is 0 °R and upper fixed point is 80 °R.
Relation between above scales is given by,
(℃ / 5) = ( F – 32 ) / 9 = R / 4 = ( K – 273 )/5
Absolute Temperature
The kelvin scale of temperature measurement is considered as absolute temperature scale. The temperature 0 K is called as absolute zero which corresponds to -273.15 ℃.
Read More about Difference Between Heat and Temperature.
Thermal Properties of Matter
Thermal Properties of Matter refer to the characteristics and behaviors of substances related to heat and temperature. These properties play a crucial role in understanding how materials respond to changes in temperature and how they conduct store, or transfer heat. Some of the key thermal properties of matter include temperature, heat capacity, specific heat capacity, thermal conductivity, thermal expansion, phase change, melting, and boiling point, among others.
In this article, we are going to explore how temperature changes affect various properties of matter. We will discuss different thermal properties that are important to study to understand the nature of any material and the effects caused by temperature changes on it.
Table of Content
- What are the Thermal Properties of Matter?
- Heat and Temperature
- Heat Capacity
- Thermal Expansion
- Thermal Conductivity
- Latent Heat