Interpretation: The steps used to form a ceramic material from scandium and ethanol using sol-gel process has to be explained.
Concept Introduction:
Ceramics are polymeric inorganic solid compounds consists of non-metal, metalloid or metal atoms held together by covalent and ionic bonds. When an inorganic substance is melted and solidified, it results in ceramics.
Ceramics are hard and have high melting points. They are heat insulators.
Ceramics have crystalline or amorphous structure.
Example: Glass
A process called sintering is to prepare ceramics. The resulting product was irregular in shape with cracks, spaces and imperfections. Hence, sol-gel method was employed to prepare ceramics of uniform size without much of cracks and gaps.
Want to see the full answer?
Check out a sample textbook solutionChapter 24 Solutions
CHEMISTRY:ATOMS FIRST (LL)>CUSTOM PKG.<
- a) Explain the band structure of an electrical conductor (metal), a semiconductor, and an insulator at 0 K by showing the valence and conduction bands and fermi energy levels. Explain how the electrical conduction takes place in these three types of materials. Give an example for each type of material. b)Explain what n and p-type semiconductors are using their band structures. Why?arrow_forwardSilicon (Si) and germanium (Ge) can be used as semiconducting materials. The band gap between the conduction band and valence band is measured in electron volts, eV. 1 eV = 1.6022 × 10⁻¹⁹J. The band gap of each semiconductor was measured, and the two values were found to be 0.69 eV and 1.12 eV. Which of the two values belongs to Ge? A) 0.69 eV B) 1.12 eV C) Cannot be determined without further information.arrow_forwardPolycarbonate is sometimes used for protective helmets, such as motorcycle helmets. However, it is often not advisable to apply adhesive stickers to the helmet surface or to clean the surface with a solvent, as both can potentially degrade the helmet strength. Why might this be?arrow_forward
- Physical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
- Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning