A solid holds its shape at room temperature. It is composed of low-energy particles that barely move from their initial positions. However, it can change shape by squeezing, stretching, squashing, twisting, and bending. Let’s explore the differences between these two types of materials. What makes one type better than the other? Here are some common examples. Solids can be classified into two groups: crystalline and amorphous.
Crystalline solids have an organized microscopic structure
Crystalline solids are composed of atoms, ions, and whole molecules packed together in an organized microscopic structure. Each of these particles is connected to four of its nearest neighbors in one layer, and to one directly above and below it in another layer. The number of these points per unit cell is known as the “coordination number”.
Amorphous solids lack characteristic symmetry
Amorphous solids are materials that lack crystalline symmetry and are thus referred to as shapeless. These materials have no specific center and are characterized by an uneven distribution of their constituent particles. Amorphous solids lack long-range translational-orientational symmetry, and therefore show no characteristic crystalline symmetry. Because of this, they exhibit uniform refractive index and thermal properties throughout, and have the same chemical properties when viewed from any angle.
They are held together by van der Waals forces
Van der Waals forces hold molecules together. These forces are additive in nature, meaning that each molecule experiences several interactions. Inertial forces are weaker than van der Waals forces, which become dominant in collections of very small particles. Van der Waals forces also work well in short distances and do not depend on temperature, except for dipole-dipole interactions. They are also not saturated. Here is a brief explanation of the nature of these forces.
They are strong
If you’re a teacher, you’ve probably seen the phrase, “They are strong and good.” While these words may sound the same, they’re pronounced differently. Some are longer and more emphatic than others. Others are weaker, and both have their own meanings and can be charged with rebellious attitudes. The differences between strong and weak words vary depending on the person’s beliefs. Here’s how to use the phrase correctly in different contexts.
They conduct electricity
Ionic solids are substances that conduct electricity in both a solid and a liquid state. These solids contain ions that move around freely in their electrolyte. However, when the solid is heated, the ions do not move and cannot conduct electricity. They can move, however, when a voltage is applied across the electrodes. Here is how ions move to conduct electricity. The ions in a liquid or molten form are called ionized.
They are a conductor of heat
The process of heat transfer through a solid involves the movement of electrons. The electrons of a solid have large free-electron density compared to the free electrons of a gas. Solids, including metals, conduct heat easily because of this, as the free electrons are able to migrate freely through the material. Metals are generally good conductors of heat, while gases and liquids are poor conductors of heat because their molecules are much farther apart.
They are a conductor of electricity
Solids conduct electricity due to their electrical properties. Metals are solids made of atoms that have a fixed charge that are sandwiched between negatively charged particles. These atoms can move around within the crystal because the electrons are mobile. This makes them excellent conductors of electricity. The melting points of metals are high and they are conductive. However, some metals do have a low melting point.