Ключевые слова: abstract, atomic, background, bank, banner, block, box, business, buy, card, chemical, chemistry, copper, cream, credit, credit card, cu, cube, cuprum, debt, electron, element, finance, gray, isolated, label, layout, metal, money, periodic, periodic table, research, science, scientific, scientist, signs, square, structure, symbol, template, threedimensional, web, website,