Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds. Chemistry addresses topics such as how atoms and molecules interact via chemical bonds to form new chemical compounds.
squash requires a brief heat treatment, called blanching, in boiling water or steam, to destroy the enzymes before freezing. Cook (blanch) the squash for 3 minutes. Begin counting the blanching time as soon as you place the squash in the boiling water.
10. Remove the masking tape before the caulk starts to skin over. The bead should look neat and even, but you may need to clean it up slightly with your finger again for a perfect finish. Caulk must cure for 24/36 hours before exposing to water and moisture. Fill the tub three quarters of the way full of water to allow the tub to sag while the silicone dries for 24 hours. 2  Otherwise the tub will sag when you get in and pull on the seam causing possible long-term cracking and breaking.