please no hand writing !!!!!! Question 1. (10 points) Define the following terms
ID: 2074601 • Letter: P
Question
please no hand writing !!!!!!
Question 1. (10 points) Define the following terms: a) compositions, b) structure, c) synthesis, d) processing and e) microstructure Compostions naturel elements Structure chemicaymade matera Synthes s Processn maleriet made threuenvoces mierestroetne-ec Question 2. (1 bonding. 0 points) Briefly cite the main differences among ionic, covalent and metallic onic- theve is attraction between ion S Covalent Shaies volence elections netaie he posidively chorged ions ore Shi eld ad from one onother Question 3. (10 points) Define the following concepts: a) Amorphous material, b) polycrystalline material and c) Single crystal a) Amorphous mato-ai pure Substonce b) Polyerystaline is a materi thet containS Smaller groins , random ly oriented Single crystal - ne one gronExplanation / Answer
1)
COMPOSITION:
chemical make up of materials.
Structure:
Description of arrangement of atoms.
SYNTHESIS:
How materials are made from naturally occurring or man made chemicals.
PROCESSING:
How materials are shaped into useful components
2)
3)
AMORPHOUS MATERIAL:
Material's atoms do not have long range order
POLYCRYSTALLINE:
Materials consists of many crystals or grains
SINGLE CRYSTAL:
Materials may be in form of one crystal
IONIC COVALENT METALLIC Forms when atom provides electrons to other atom forms when two atoms share their valence electrons forms when variable number of atoms share a variable number of electrons in a metal lattice Bonding energy higher than metallic bond bonding energy higher than the metallic bond bonding energy lower than other primary bonds Only exists in solid state exists as solid liquid and gases only exists in solid state Have higher melting and boiling point have lower melting and boiling points have higher melting and boiling pointsRelated Questions
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