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.
Do not use beans with big seeds (for this indicates older, tougher beans). Avoid wilted or flabby bean pods, serious blemishes, and decay. To prepare the green beans for blanching, wash the beans very well and remove the stem ends. Cut into 2- to 4-inch lengths and blanch for 3 minutes. Immediately after blanching, place in ice cold water. Place in appropriate containers leaving 1/2â³ headspace and freeze.