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.
global warming is the increase of earth s average surface temperature due to effect of greenhouse gases such as carbon dioxide emissions from burning fossil fuels or from deforestation which trap heat that would otherwise escape from earththis is a type of greenhouse effectlobal warming is the increase of earth s average surface temperature due to effect of greenhouse gases such as carbon dioxide emissions from burning fossil fuels or from deforestation which trap heat that would otherwise escape from earth