-What the Bleep Do We Know!? | Water Crystals.And yet about it we know significantly little. Until the groundbreaking work of a pioneer Japanese researcher whose astonishing discovery about water, documented ...--Structure and materials | Build a Vagina.What makes a good DIY male sex toy or masturbator? A good home made artificial vagina should have 3 key elements in its structure. These are contact surface, flesh ...--Properties of Compounds - Ionic, Covalent and Metallic.Properties of Compounds - Ionic, Covalent and Metallic 1. Recap, we have learnt

• 2 types of bonds exist between compounds