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Is polyethylene a solid liquid or gas at room temperature?
Because the dispersion forces between polythene are greater and stonger becauseit has long chains of ethenes. Whereas, the dispersion forces between ethene arent that great because its just a single monomer, hence ethene is a gas and polyethene a solid
Is the formation of polyethylene from ethylene a chemical reaction?
Polyethene is created through the polymerization of ethene. Under the right conditions of temperature, pressure and catalysis, the double bond of the ethene monomer opens up and many monomers link up to form long chains. Polyethene manufacturing processes are usually categorized into "high pressure" and "low pressure" operations. The former is generally recognized as producing conventional low density polyethene (LDPE) while the latter makes high density (HDPE) polyethene. The difference between these polyethene processes is that LDPE is formed at 1000 - 3000 bar and 80 - 300 degrees C in the presence of minute quantities of oxygen, and HDPE is formed at 10 - 80 bar and 70 - 300 degrees C in the presence of an aluminium-based catalyst.
What is the chemical equation for polyethene?
-(CH2-CH2)n- a polymere structure, stereochemically drawn in the 'Related link' just below left this answer page.
What happens to each ethene molecule when it becomes polyethene?
The carbon-carbon double bond is turned into a single bond as two electrons are taken to form the bonds to the next two-carbon unit, and so on down the chain.
What happens to ethene makes polyethene?
It is made by a process called polymerization, this is where they take lots of monomers (in this case ethane) and combine them together using an addition reaction. This is only possible in monomer where there is a double bond as to add them the double bond has to break for there to be enough room on the carbon for the new monomer. this process is done millions of times and is finally makes polythene which is used to make bin liners and poly bags.
What is polyethene made from?
it is a polymer of ethene
What are polymers made from ethene?
Polyethylene also know as polyethene. Found commonly in plastic bags.
Is ethene a monomer or a polymer?
Ethene ( C2H4 ) is the monomere of the polymere 'polyethene'(also called polyene, short name: PE, symbol: (C2H4)n )
Why does polyethene not react in the same way with bromine water as ethene?
As polyehtene is unsaturated(single bond) it does not react with bromine and there is no colour change.But bromine reacts with ethene and it becomes colourless.
What is the active ingredient in polymer?
Polymer is not a substance. It is a term applied to something that has 'many links' For example Polyethene is ethene connected to ethene connected to ethene and so on. So if something is a polymer it basically mean there is many of them (e.g polysaccharides= many sugars)
What is poly(ethene)?
polyethene (polythene, polyethylene) Polymer of ethene. It is a partially crystalline, lightweight, thermoplastic resin with high resistance to chemicals, low moisture absorption and good insulating properties. Low-density polyethene (LDPE) was first produced in the 1930s. It is mainly used in the manufacture of plastic bags. High-density polyethene (HDPE), synthesized in the 1950s, is more flexible and is used for mouldings. polyethene (polythene, polyethylene) Polymer of ethene. It is a partially crystalline, lightweight, thermoplastic resin with high resistance to chemicals, low moisture absorption and good insulating properties. Low-density polyethene (LDPE) was first produced in the 1930s. It is mainly used in the manufacture of plastic bags. High-density polyethene (HDPE), synthesized in the 1950s, is more flexible and is used for mouldings.
Describe the formation of polyethene as an example of additional polymerisation of monomer units?
Alkene such as ethene contain c=c double bond.Hence these molecules can take part in addition reaction where the double bond is broken and other atoms attach to the carbon across the double bond to form large molecule such as polyethene. Here the ethene is the monomer and polyethene the addition polymer which is formed under high pressure, heat and by using a catalyst.
Is polyethylene a solid liquid or gas at room temperature?
Because the dispersion forces between polythene are greater and stonger becauseit has long chains of ethenes. Whereas, the dispersion forces between ethene arent that great because its just a single monomer, hence ethene is a gas and polyethene a solid
Is the formation of polyethylene from ethylene a chemical reaction?
Polyethene is created through the polymerization of ethene. Under the right conditions of temperature, pressure and catalysis, the double bond of the ethene monomer opens up and many monomers link up to form long chains. Polyethene manufacturing processes are usually categorized into "high pressure" and "low pressure" operations. The former is generally recognized as producing conventional low density polyethene (LDPE) while the latter makes high density (HDPE) polyethene. The difference between these polyethene processes is that LDPE is formed at 1000 - 3000 bar and 80 - 300 degrees C in the presence of minute quantities of oxygen, and HDPE is formed at 10 - 80 bar and 70 - 300 degrees C in the presence of an aluminium-based catalyst.
What is the chemical equation for polyethene?
-(CH2-CH2)n- a polymere structure, stereochemically drawn in the 'Related link' just below left this answer page.
What happens to each ethene molecule when it becomes polyethene?
The carbon-carbon double bond is turned into a single bond as two electrons are taken to form the bonds to the next two-carbon unit, and so on down the chain.
What are the uses of polyethene?
Polyethene can be used to make carry bags. Many apparel stores pack the newly bought items in Polyethene bags for the customers to transport them easily.
