is plastic a non metal? if no, then why not? if yes, then why is it written in the column " properties of non-metals " that all non- metals are soft and can be easily broken? i need a perfect explanation
The term metal and non-metals is used for elements. Plastic is not an element but a polymer composed of different non-metals such as carbon, hydrogen, oxygen, nitrogen etc. Also, not all plastics can be deformed. Some plastics can be easily deformed, while others cannot and so break when forced to bend. These are known as thermosetting plastics.
The radiation from the sun enter the Earth’s atmosphere but are unable to escape. This increases the temperature of the Earth. This is called the greenhouse effect .
When radiation from the sun strike the earth and are reflected back, the gases present in the atmosphere of earth like CO2, CO, CH4 absorb heat energy and do not let these radiation to go back. As a result the temperature of the earth increases. The earth is warmer because of presence of these gases, as they prevent escape of heat. Without greenhouse effect the temperature of earth would have been -180C.
Hope this helps!