Molecular solidsâ Made up of atoms or molecules held together by London dispersion forces, dipole-dipole forces, or hydrogen bonds. Characterized by low melting points and flexibility and are poor conductors. An example of a molecular solid is sucrose.
There are two main problems when it comes to hard-boiled eggs: green-gray yolks and shells that just wonât peel off. Make hard-boiled eggs headache-free by following this easy method. First, place the cold eggs in a single layer in a pan with enough cold water to cover them by about 1 inch. Then, place the pan on the stove over high heat. Shutterstock. As soon as the water comes to a boil turn the heat off, cover the pan, and remove it from the heat. Allow the eggs to sit in the water until they are cooked; about 9 minutes for a medium egg, 12 minutes for a large egg, and 15 minutes for an extra-large egg.
Making hard-boiled eggs is an essential cooking skill â a task that is seemingly easy but always comes up just short of perfect. The two most common problems that arise when trying to make hard-boiled eggs are achieving the proper doneness (because nobody likes sulfuric green yolks) and egg shells that just wonât peel off without taking a big chunk of the white with it. Make the process easier use this headache-free method for the easiest hard-boiled eggs. 1  Step 1: Place the eggs in a pot, cover with cold water, and place the pot on the stove. 2  Step 2: Bring the cold water to a boil. Once the water arrives at a rolling, bubbling boil, then turn the heat off, cover the pan, and remove it from the heat. Allow the eggs to sit in the water until they are cooked; about 9 minutes for medium eggs and 12 minutes for large eggs.