Fractional distillation - Study guides, Revision notes & Summaries

What are the 3 byproducts of sugar in fermentation? - CO2, alcohol, heat Boiling Point of Water vs Alcohol - 212/173 What are the 5 things a fermented liquid contains? - water, acid, aldehydes, esters, and congeners What is fractional distillation? - The separation and concentration of two or more liquids with different boiling points What counts as a congener? - Acids, aldehydes, esters, fusel oils, other alcohols Define Heads, Hearts, Tails -

Chemistry IGCSE Oxford AQA organic chemistry Summary Questions and Answers 2023 Updated Crude oil is a mixture of... - CORRECT ANSWER -A very large number of compounds Most of the compounds in crude oil are... - CORRECT ANSWER -hydrocarbons What are hydrocarbons? - CORRECT ANSWER -Molecules made up of hydrogen and carbon atoms only How are the many kinds of hydrocarbons separated? - CORRECT ANSWER -They are separated into fractions, each of which contains molecules with a similar numbe...

2023 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2F Chemistry Paper 2F Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • If you need extra space for your answer(s), ...

MMET206Exam2QuestionswithComplete Solutions. Polymer - Correct Answers a substance composed of molecules with large molecular mass made up of repeating structural units (chain), or monomers, connected by a covalent chemical bond Synthetic - Correct Answers Describing a substance that has been made artificially through chemical synthesis, i.e. one that does not come from a natural source Synthetic Polymers Types - Correct Answers Fibers (aramid (Nomex, Kelar, Nylon) polyester); Plastics ...

GCSE AQA Chemistry- Organic Chemistry Study Guide Test. How is crude oil formed? - CORRECT ANSWER Over millions of years from the fossilised remains of plankton Where is crude oil found? - CORRECT ANSWER In the porous rocks in the Earth's crust Is crude oil renewable or non-renewable? - CORRECT ANSWER Non-renewable What is crude oil made up of? - CORRECT ANSWER Hydrocarbons What gives hydrocarbon molecules varying properties? - CORRECT ANSWER They vary in size What happens t...

Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). • Do all rough work in this boo...

Purification techniques (discussed so far) - correct answers Extraction Recrystallization Simple/fractional distillation Analysis techniques (discussed so far) - correct answers Mp NMR TLC When to use extraction - correct answers Want to separate compounds based on solubility and density gradient, and you have two immiscible liquids. Why could hexane be used in an extraction with water, but not acetone? - correct answers Acetone is water soluble and hexane isn't; extraction require...

Difference between Asphalt and Tar correct answers Asphalt is soluble in petroleum, tar is not. Asphalt has bitumens, tar has low bitumens Two Different Distillation Process to Produce Asphalt correct answers 1. Fractional Distillation: Crude oil is heated, lighter oils vaporize and are drawn off, leaving behind asphalt cement 2. Destructive Distillation: crude oil heated under pressure to higher temperatures than fractional distillation Penetration test correct answers -Test hardness...