Unit 3 Flashcards
What are polymers
Polymers are very large molecules made when hundreds of monomers join together to form long chains
What are plastics known as?
Polymers
Give a fact about plastics
They are synthetic polymers that can be shaped by heat or pressure
What does synthetic mean
Man made
What is polymerisation
A reaction which occurs when monomers join to form a polymer
What are the two main types of polymer
Addition and condensation
How are addition polymers made
Addition polymers are made from monomers which contain a double bond
How many monomers are used in condensation polymers
2
What is an ore
A naturally occurring metal compound
What metals are found uncombined
Gold, platinum, silver
How are all reactive elements from Aluminium upwards on the reactivity series extracted?
Using Electrolysis
What is an alloy
An alloy is a metal made by mixing different metals, or metals with non metals
What makes alloys good
Alloys improve the properties of metals by making them harder, stronger and more resistant to corrosion
