Silicon dioxide is not a white solid- large pure crystals are colorless and transarent- powdered silcon dioxide is white- this is due to the presence of the small particles. titanium dioxide has a high refractive index so appears white.
molecular solids
Network solids are composed of a continuous three-dimensional arrangement of atoms or molecules that are bonded together by strong covalent bonds. Unlike discrete molecules, these solids have no distinct individual units; instead, the entire structure is a vast network where each atom is typically bonded to several others. Common examples include diamond, where carbon atoms are tetrahedrally bonded, and silicon dioxide (quartz), where silicon and oxygen atoms form a repeating framework. This extensive bonding contributes to their high melting points and hardness.
Solids: concrete, glass, steel Liquids: water, beer, wine Gases: air, carbon dioxide, methane
Glass is almost completely Silica (silicon dioxide), the naturally occurring form of the element silicon, and is actually a liquid. Look a the bottom edge of an old plate glass window (50 years or older). The bottom will be measureably thicker than the top. This is due to the silica "flowing" downward in response to gravity.
Examples: camphor, solid carbon dioxide.
Covalent network solids are typically composed of nonmetal elements bonded together with strong covalent bonds in a continuous three-dimensional network structure. Examples include diamond (carbon), silicon dioxide (silica), and silicon carbide. These solids have high melting points, are non-conductive, and are very hard due to their strong covalent bonds.
Crystalline solids include elemental crystals such as diamonds (carbon) and crystals of compounds such as halite (salt), quartz (silicon dioxide SiO4-O2), and snowflakes (water).
atoms,solids,silicon and oxygen
atoms,solids,silicon and oxygen
iodine, carbon, boron, silicon, and there is more
molecular solids
Carbon dioxide
Most metals are solids at normal temperatures but become liquids at high temperatures. The melting point for titanium is 1649 °C or 3000 °F.
Network solids are composed of a continuous three-dimensional arrangement of atoms or molecules that are bonded together by strong covalent bonds. Unlike discrete molecules, these solids have no distinct individual units; instead, the entire structure is a vast network where each atom is typically bonded to several others. Common examples include diamond, where carbon atoms are tetrahedrally bonded, and silicon dioxide (quartz), where silicon and oxygen atoms form a repeating framework. This extensive bonding contributes to their high melting points and hardness.
Nonmetal atom
diamond & silicon-carbide. Thank you magesh gopi.
Solids: concrete, glass, steel Liquids: water, beer, wine Gases: air, carbon dioxide, methane