General Chemistry Dictionary. (metal,metalloid) A nonmetal is a substance that conducts heat and electricity poorly, is brittle or waxy or gaseous, and cannot be hammered into sheets or drawn into wire. Nonmetals gain electrons easily to form anions . About 20% of the known chemical elements are nonmetals.
When and if your child comes to you and asks you to explain global warming, you need to know the basics yourself so you can effectively explain it to your child. Global warming refers to the gradual temperature increase that the Earth has experienced and is projected to continue to experience as time passes.lobal warming for kids can be a tough subject to approach. Not only are there conflicting scientific views regarding global warming, but you also don't want to give your young children the idea that they are inheriting a doomed Earth.
I strongly believe that global warming is a phenomenon caused by human activities, which results in a raise in greenhouse gases in the atmosphere. The scientific panel studying climate change stated that the proof of a warming is clear and the human activity has been the major reason for the change. Global warming is the result of warming of earth and sea due to the increased concentration of greenhouse gases. The main cause of global warming is the human activities which emit greenhouse gas which is known as the greenhouse effect. When sunlight reaches the earth it is absorbed by the earth and warms it.