In general, MOST foam play flooring / mats are made with a material called EVA (ethylene vinyl acetate) which is a foam rubber compound. For a while now it has been viewed as a healthier alternative to PVC and the process of making it excludes the use of chlorine which can produce carcinogenic compounds called dioxins.
A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using the standard abbreviations for the chemical elements, and subscripts to indicate the number of atoms involved.ny substance consisting of two or more different types of atoms (chemical elements) in a fixed proportion of its atoms (i.e., stoichiometry) can be termed a chemical compound; the concept is most readily understood when considering pure chemical substances.
A chemical formula is a representation of the elements in a molecule. Although the word formula connotes an equation, chemical formula are not to be confused with chemical equations, which describe multiple molecules at once.olecular Formula. The molecular chemical formula uses subscripts to count the number of elements in a molecule, e.g. H2O, where the 2 is a subscript. One variant is to clump element symbols together in the order they appear in the molecule, e.g. CH3-O-CH3 or CH3OCH3, instead of C2H6O.