Flashcards
Chemistry 5 Cracking Hydrocarbons GCSE Core
Flashcards do conjunto (14)
- 1Give three reasons why fractions from crude oil are crackedContains too many large hydrocarbons --- Do not flow easy --- Difficult to ignite
- 2What does cracking produce?Alkane's and Alkene's
- 3Are Alkenes saturated or unsaturatedUnsaturated
- 4What Colour does Alkenes turn bromine waterFrom Orange to Colourless
- 5Give two ways how hydrocarbon molecules be crackedHeating them with steam to a very high temperature --- Passing their vapours over a hot catalyst
- 6What is a polymer?Plastics are large molecules made when many small molecules join together
- 7What makes Polymers?Monomers
- 8What are plastics made ofPolymers
- 9What can alkenes be used to make?Polymers such as poly(ethene) and poly(propene)
- 10Describe one use of a smart polymerA shape memory Stitch
- 11How does a Shape memory stitch work?It uses the temperature of the body to make the threat tighten and close the wound
- 12What does 'Biodegradeable' mean?A substance or object capable of being decomposed by bacteria or other living organisms and thereby avoiding pollution
- 133 ways of reducing plastic wasteReuse Bags and bottles --- Make more Biodegradeable products --- Use recycling bins
- 14Outline the two ways that can be used to make ethanol and give an advantage and a disadvantage of each method.Fermenting sugar using enzymes in yeast = Sustainable only uses plant material ➝➝➝ Hydration of ethene with steam in the presence of a catalyst = Unsustainable needs crude oil
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- GCSE Chemistry FlashCards sobre Chemistry 5 Cracking Hydrocarbons GCSE Core, criado por Chloe Roberts em 25-04-2014.
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- Chloe Roberts
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