National Geographic Red Crystal Growing Lab

Perfect

My kids had fun with this project

Did not grow as big as it said

We grew this in a jam jar over 2-3 months, amazing patterns on the outside. When it came time to remove the crystal we simply scored around the widest part of the base of the jar and heat shocked the jar and gave a tap and out it popped.

Really impressed with this kit! We grew a large crystal about 8cm high. Tips: 1) When you watch the video tutorials for this type of crystal it specifies to keep the blue one in the DARK. So we kept in a cupboard up high in the kitchen. 2) we also read that slow cooling helps, so we made up the crystal liquid, dropped in the seed rock and dunked the pot in 1 inch of hot water in a steel saucepan for about 2 hours. We then transferred to the cupboard. I guess you could skip this step if doing the crystal in summer though! We weren't! It was 4c outside and 16c inside! 3) Use a container to grow it in, that you are happy to display afterwards. Or consider a large opening at the top of your container. Otherwise you end up snapping a lot of crystal shards off trying to pull the crystal out of the growing pot. This happened to us and even though damage was minimal it was unnecessary, we only took it out because my 7 year old was adament he had to hold it. For best results use a glass jar with a lid, so you have a pot for storage afterwards! 4) We left our crystal for about 12 days. The growing was continuous over the days, no doubt it would be even bigger if we continued to leave it. 5) Basic chemistry will teach you that any outside element can completely change the compounds and chemical reactions. So make sure anything you use is thoroughly clean, with no soap residue, dust or cleaning sprays present.

Après 2 ou 3 semaine aucune résultat le galet se désagrège tandis que la solution ne produit aucun cristaux... D'autred kit permettent de faire mieux et plus de cristaux,pour le même prix. N'ACHETEZ PAS !