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 a vegetable belonging to the Apiaceae family. It is well known for its crunchy stalks, which people often consume as a low calorie snack. However, celery is not only a good low calorie food.There are a number of other reasons why you might want to include this vegetable in your diet.n addition, the seeds of the plant are also commonly used in medicine to help relieve pain. This MNT Knowledge Center feature is part of a collection of articles on the health benefits of popular foods. It provides a nutritional breakdown of celery, some of the potential.