Bubble Rock - Grow Your Own Crystals (Comes With 2 Pieces and Instructions)

GROW YOUR OWN CRYSTALS || Grow your own crystals on the "bubble rocks" with this simple experiment. A fun activity that introduces young learners to minerals, crystals and chemical reactions INCLUDED || Kit includes two gray limestone rocks (approximately 2-3 inches in size) and simple instructions for conducting the experiment. Required but not included: Distilled white vinegar and a transparent glass container EASY & FUN || Simply place your bubble rocks in a glass container with white vinegar, and let sit for 1-2 weeks and watch as crystals start to form TRACK THE GROWTH OF YOUR CRYSTALS || Experiment takes up to two weeks to complete, making it easy to track the growth of the crystals GREAT FOR CLASSROOMS OR AT HOME || Perform the experiment with a class of students, or enjoy a fun activity with young learners at home Bubble rock is a carbonate rock undergoes a chemical reaction when immersed in a weak acid, such as vinegar. This reaction causes some of the rock to dissolve a