The package came on the expected delivery date. There were no hiccups at all. Came wrapped in bubble wrap with pink parchment paper. All pieces in tact, made me excited to open and use my chemistry set-my floormate beat me to that.
Verified purchase: Yes | Condition: Pre-owned
Great educational tool. I've combined this set with several other sets to allow creation of larger molecules. My students built a buckyball the other day. Kept them enthralled for a while. And, they learned a bit about molecular valences.
Verified purchase: Yes | Condition: Pre-owned
The Prentice Hall molecular model set for organic chemistry is pretty much the standard for many classes. It makes a great way to quickly visualize the structures being studied and is durable enough to take the constant building and breaking down of models. It is the best tool available if you're the type of person that needs to visualize a concept to master it. The only downside to the product is that it is fairly expensive and even used it maintains its value making it sometimes difficult to find at an a discount. If a deal presents itself then by all means go for it.
Depicting free rotation of single bonds using the molecular kit is easy. However, creating double and triple bonds is not easy because the actual bond representation is hard to bend. In addition, creating and separating atoms and bonds is hard and takes a considerable amount of time.
I feel good about this purchase. I usually avoid purchasing stuff on ebay because I suppose that once I receive something I am unlikely to return it even though it doesn't meet my satisfaction. This item, however, is way, way overpriced anywhere else so I took a chance and ordered. The price was right (the best on the net as far as I am concerned) and I was willing to have purchased it with a few pieces missing, but it was all there and that makes me very, very happy. Organic Chemistry is the toughest course that I have taken thus far in my college career, and I will use this model set to conceptualize the material especially as it regards the stereochemistry.
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