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.
Homily on Celery. Botanical name: Apium graveolens. A crunchy snack all by itself or with peanut butter added to round out the nutrients, celery is one of the most versatile vegetables in the garden, useful for its flavorful seeds and pale green leaves and stalks. crunchy snack all by itself or with peanut butter added to round out the nutrients, celery is one of the most versatile vegetables in the garden, useful for its flavorful seeds and pale green leaves and stalks.