When the earth is in the summer solstice (Northern Hemisphere), the earth is the farth â¦ est away from the sun. The reason behind seasons is determined on the earth's tilt. If the tilt is toward the sun, it is summer. If the tilt is away from the sun, it is winter.
In chemistry, a symbol is a code for a chemical element.It is usually derived from the name of the element, often in Latin. This is an example of an atomic symbol. The text boxes explain where the numbers are derived from.or example, He is the symbol for helium (English name, not known in ancient Roman times), Pb for lead (plumbum in Latin), W for tungsten (wolfram in German, not known in Roman times). Only the first letter is capitalized.
In order to make it easier to describe elements and molecules, chemical formulas are used. For example, H represents one atom of hydrogen and O represents one atom of oxygen. If we want to represent two atoms of hydrogen, instead of writing H H, we write H2.The subscript 2 means that two atoms of the element hydrogen have joined together to form a molecule.A subscript is only used when more than one atom is being represented. The graphic below illustrates the formula for water using symbols. Some more common molecules and their chemical formula.eview: 1  Chemical formulas are used to describe the types of atoms and their numbers in an element or compound. 2  The atoms of each element are represented by one or two different letters. 3  When more than one atom of a specific element is found in a molecule, a subscript is used to indicate this in the chemical formula.