STD X – HEAT – NEWTON

Heat capacity, Specific heat capacity and its measurement

Materials of the same mass require a different quantity of heat to change (increase or decrease) their temperatures to the same level. The quantity of heat needed to change (increase or decrease) the temperature of a unit mass a material by 1°C is known as the specific heat capacity of that material. The specific heat capacity depends on the type of material.

In this topic, you will more about specific heat capacity, the concept of calorimetry, and specific heat capacity of water.

Change of phase (state) and Latent heat

Change in the state of matter from one phase to another phase at a constant temperature is known as the change of phase of that matter.

Latent heat of a matter is the heat energy needed to change the phase of that matter.

In this topic, you will learn about specific latent heat, specific latent heat of melting, specific latent heat of vapourisation and other interesting facts that we can observe in day-to-day life, due to change of phase and latent heat.

Green House Effect and Global Warming

The warming of earth’s surface and the air above it is known as greenhouse effect. The greenhouse gases causes the greenhouse effect. Water vapour, methane, carbon dioxide are the most common greenhouse gases. The greenhouse effect is essential to keep our planet earth warm.

However, when there is more greenhouse gas, the air holds more heat, thus causing global warming. The greenhouse effect has become too strong in the recent years, which in turn, increases the global warming.

You will learn more about greenhouse effect and global warming in this topic.