Addition Polymers. Addition polymers such as polyethylene, polypropylene, poly(vinyl chloride), and polystyrene are linear or branched polymers with little or no cross-linking. As a result, they are thermoplastic materials, which flow easily when heated and can be molded into a variety of shapes.
According to what I have read a stalk of celery is the whole bunch....a rib, is one of the many that make up the stalk....so many of the recipes are really wrong when th â¦ ey say one stalk....you would have way too much celery.
Celery is from the same plant family as carrots, parsley, fennel and caraway. There are two main varieties of celery grown today.The most common is the pale green Pascal celery. Golden celery is grown under a layer of soil to prevent it from developing and turning green.he wild form of celery is known as smallage. It has a bitter taste, and the stalks are more stringy than cultivated celery. Smallage was used in ancient times as a medicine, and the Romans used it as a seasoning. It the 17th and 18th centuries celery was developed by breeding the bitterness out of smallage.