Answer:
Crystals can be of many types.
Step-by-step explanation:
- Covalent crystals are crystals whose atoms are connected with covalent bonds.A Covalent bond exists where the atoms share electrons. These bonds are extremely strong and very hard to break. Because of this, the crystals themselves are also very strong and have high melting points. Imagine gluing together beads with super glue.An example of a covalent crystal is a diamond.
- Ionic crystals are crystals whose atoms are held together with ionic bonds, or charged bonds. With these ionic bonds, one atom is negatively charged and is attracted to other atoms in the crystal that are positively charged.
- Metallic crystals are crystals made of metal elements. These crystals sparkle with the lustrous sheen we think of metals having.