What are the properties of glass?

Answer 1

Glass displays all the mechanical properties of a solid.

PropertiesSoda-lime glass (for containers)[2]Borosilicate (low expansion, similar toPyrex, Duran)Glass wool (for thermal insulation)Special optical glass (similar to

Lead crystal)Fused silicaGermaniaglassGermanium selenide glassChemical

composition,

wt%74 SiO2, 13 Na2O, 10.5 CaO, 1.3 Al2O3, 0.3 K2O, 0.2 SO3, 0.2 MgO, 0.01 TiO2, 0.04 Fe2O381 SiO2, 12.5 B2O3, 4 Na2O, 2.2 Al2O3, 0.02 CaO, 0.06 K2O63 SiO2, 16 Na2O, 8 CaO, 3.3 B2O3, 5 Al2O3, 3.5 MgO, 0.8 K2O, 0.3 Fe2O3, 0.2 SO341.2 SiO2, 34.1 PbO, 12.4 BaO, 6.3ZnO, 3.0 K2O, 2.5 CaO, 0.35 Sb2O3, 0.2 As2O3SiO2GeO2GeSe2Viscosity

log(η, Pa·s) = A +

B / (T in °C - To)550-1450°C:

A = -2.309

B = 3922

To = 291550-1450°C:

A = -2.834

B = 6668

To = 108550-1400°C:

A = -2.323

B = 3232

To = 318500-690°C:

A = -35.59

B = 60930

To = -7411140-2320°C:

A = -7.766

B = 27913

To = -271.7515-1540°C:

A = -11.044

B = 30979

To = −837Glass transition

temperature, Tg, °C573536551~5401140526 ± 27[3][4][5]395 [6]Coefficient of

thermal expansion,

ppm/K, ~100-300°C93.51070.557.3Density

at 20°C, [g/cm3], x1000 to get [kg/m3]2.522.2352.5503.862.2033.65 [7]4.16 [6]Refractive indexnD[8] at 20°C1.5181.4731.5311.6501.4591.6081.7Dispersion at 20°C,

104×(nF - nC)[8]86.772.389.516967.8146Young's modulus

at 20°C, GPa726575677243.3 [9]Shear modulus

at 20°C, GPa29.828.226.831.3Liquidus

temperature, °C10401070[10]17151115Heat

capacity at 20°C,

J/(mol·K)495050514452Surface tension,

at ~1300°C, mJ/m2315370290Chemical durability,

Hydrolytic class,

after ISO 719[11]3

These are the main characteristics of glass:- Solid and hard material

- Disordered and amorphous structure

- Fragile and easily breakable into sharp pieces

- Transparent to visible light

- Inert and biologically inactive material.

- Glass is 100% recyclable and one of the safest packaging materials due to its composition and properties

Answer 2

Qualities of glass could be something fragile, like glass plates, or glass cups, mirrors, bulbs and lots of other things too.

I would describe glass as solid, transparent (or sometimes translucent, depending on the type of glass), dense, waterproof, and usually quite breakable.