A crystal is made up of _ ?

Explanation

A crystal can be made up of atoms, ions, or molecules. The type of particles that make up a crystal depends on the substance that the crystal is made of. Atoms are the basic units of matter. They are made up of protons, neutrons, and electrons. Ions are atoms that have lost or gained electrons. They have a positive or negative charge. Molecules are two or more atoms that are bonded together. For example, salt crystals are made up of sodium ions and chloride ions. Sugar crystals are made up of sugar molecules. Quartz crystals are made up of silicon dioxide atoms.In general, crystals are made up of the same type of particles. However, there are some exceptions. For example, some crystals can be made up of a mixture of atoms, ions, and molecules.The particles in a crystal are arranged in a regular, repeating pattern. This pattern is called a crystal lattice. The crystal lattice determines the shape and properties of the crystal.