![]() ![]() Our expert tutors prepare online maths worksheets that are age and grade-appropriate. Other than textbooks, worksheets help you revise and understand concepts better. A middle or high school student must set aside a minimum of an hour for math every day. ‘Practice makes a man perfect’ holds true for no other field better than for math. Understanding graphs, charts, and opinion polls in a newspaper, for calculating house and car payments, and for choosing a long-distance telephone service are impossible without strong math skills …and the only way to develop strong math skills is by constant practice. Helium, neon, argon are some examples of inert gases.ĮTutorWorld Understands Math Tutoring | Online Math Worksheets are Important Tools The last group, 18, consists of colorless, odorless, and mostly non-reactive gases, also called Inert Gases. Chlorine, fluorine, and iodine are some popular halogens. They include the Halogens in group 17 which are chemically reactive with alkali metals to form salts. The rest of the elements in groups 13 to 17 are non-metals such as carbon, sulfur, phosphorus, and oxygen. Some of the elements in groups 13 to 17 are called Metalloids on account of their gradual transition from metals to non-metals. These span groups 13 to 17 and consist of the post-transition metals, such as aluminum, tin, and lead, which are poorer conductors of heat and electricity as compared to the transition metals. These are the typical metals like zinc, gold, silver, iron, for example. The groups 3 to 12 are hard, malleable, shiny, and good conductors of heat and electricity. They are found mostly in compounds and minerals, never in their natural form. They are also soft, shiny, and quite reactive. These metals mostly from the first group and are shiny, soft, and extremely reactive, bursting into flames or even exploding when they come in contact with water. ![]()
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