A: Copper is classified as a metal on the periodic table and is therefore not classified according to family in the manner that plants and animals are. Copper is red-colored. It is malleable, ductile, and a good conductor of heat and electricity.
For a hard-boiled egg, start the egg in cold water and bring up to the boil. Once the water is gently boiling, set the timer for between 7-10 minutes depending on how well cooked you like your eggs. The longer you boil the egg, the firmer it will be. Once cooked, plunge the hard-boiled egg into plenty of cold water for one minute. Drain and cover with more cold water.
3) Let the eggs stand in the hot water for 14-17 minutes. How long you let the eggs stay in the water depends on how big the eggs are and how hard you want them cooked. To cook small eggs to medium, let them stand for 14 minutes. To cook extra-large eggs to medium, let them stand for 17 minutes. (Weâre talking about chicken eggs here.