TECH 31065 Lecture Notes - Lecture 3: Inorganic Compound, Chlorine, Transition Metal
11 May 2018
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Basic Metallurgy Concepts
• Material types
o Metals
o Ceramics
o Polymers
o Composites
• The atom- sallest part of a eleet that retais the eleet’s properties
• Element- a pure substance that cannot be broken down by chemical means to a simpler
substance
• Compounds- chemically combined elements with definite proportions
• Alloys- metallic compounds
• Molecule- the sallest part of a opoud that retais the opoud’s properties
• Every form of matter exists as a solid, liquid, or gas
• Organic Compound
o Was once living
o Contains carbon
o Contains hydrogen
o Polymers
o Wood/paper
o Textiles
o Petroleum/coal
• Inorganic compound
o Was never alive
o Will never be alive
o Metals
o Ceramics
o Glass
o Water
o Stone
The Periodic Table
• The rule of eight- tells how reactive an element is
o The outer shell of electrons wants to have a multiple of 8 electrons
o The most reactive elements only need to gain/lose 1 electron
▪ On the outer edge of the chart
• The densest elements are in the middle of the chart
• Elements in the same column have the same properties
• Approximate conductivity of electricity and heat
o Metals conduct and non-metals do not
o The denser the metal the better the conductivity
Metallic Elements
• Have a valence of -1,-2,-3
• Opaque as a solid or liquid
• Can be easily shaped
o Atoms can be dislocated
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