Fractional distillation - Study guides, Class notes & Summaries
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Asphalt || with 100% Accurate Solutions.
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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...
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ON Curriculum - Course Notes Gr 12 Chemistry
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Covers in-depth complete course notes for grade 12 chemistry (university level). Includes topics: 
 
1. Structure and Properties of Matter 
- History of the Atomic Theory 
- Various historic models and theories 
- Electromagnetic Spectrum 
- Schrodigner’s Equation 
- Quantum chemistry 
- VESPR 
 
2. Energy Changes and Rates of Reaction 
- Laws of thermodynamics 
- Enthalpy 
- Calorimetry and Calorimeters 
- Hess' law 
- Reaction types 
- Rates of reaction 
- Collision theory 
- Maxwell-Boltz...
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IGCSE Chemistry Written Exam 2024.
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IGCSE Chemistry Written Exam 2024. 
 
 
State the method used to obtain sand from a mixture of sand and water - CORRECT ANSWER filtration 
 
State the method used to obtain solid copper sulfate from aqueous copper sulfate - CORRECT ANSWER crystallisation 
 
State the method used to obtain red food dye from a mixture of food dyes - CORRECT ANSWER paper chromatography 
 
State the method used to obtain water from salt water - CORRECT ANSWER simple distillation 
 
Draw a diagram to show equipment u...
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Entc 206- Test 2 questions and answers graded A+ passed
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Entc 206- Test 2Polymer - correct answer is a substance composed of molecules with large molecular mass made up of repeating structural units, or monomers, connected by covalent chemical bonds. 
 
Synthetic - correct answer describing a substance that has been made artificially thru chemical synthesis; one that does not come from a natural source. 
 
Synthetic Polymers - correct answer Fiber, Plastics, Elastomers (or Rubber), protective Coating, Adhesives. 
 
What raw material are polymers ma...
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2023 AQA AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]
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ction A and 25 minutes on Section B. 
2 
Section A 
Answer all questions in this section. 
0 1This question is about the analysis of organic compounds. 
For each pair of compounds in Questions 01.1 and 01.2, give a reagent (or 
combination of reagents) that could be added separately to each compound in a 
single reaction to distinguish between them. 
State what is observed in each case. 
0 1 . 1CH3CH2CH2CHO and CH3CH2CH(OH)CH3 
[3 marks] 
Reagent(s) 
Observation with CH3CH2CH2CHO 
Observation ...
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RRT EXAM Questions with 100% Correct Answers
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RRT EXAM Questions with 100% Correct Answers Verified | Updated 2024/2025 
therapeutic gases 
Air, Oxygen, Heliox (Helium/oxygen) Carbon Dioxide, Nitric Oxide 
 
 
Laboratory gases 
Nitrogen, helium, and carbon dioxide 
 
 
Anesthetic gases 
nitrous oxide 
 
 
Fire Risk Classifications 
Non-flammable (do not burn); 
Oxidizing (non-flammable but supportive of combustion); 
Flammable (burns readily, potentially explosive) 
 
 
Characteristics of o2 
Odorless, tasteless, colorless 
Non-flammable, b...
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AQA GCSE COMBINED SCIENCE: TRILOGY F Foundation Tier Chemistry Paper 2F 2023
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What is crude oil formed from? 
What type of substance is crude oil? 
The hydrocarbons in crude oil are separated into fractions using fractional distillation. 
 
Complete the sentences. 
Choose answers from the box. 
In fractional distillation the crude oil is heated so 
the hydrocarbons 
The fractions collect as the hydrocarbons cool and 
Hydrocarbons can be cracked to produce more useful molecules. 
 
. 5 
0 1 Complete the sentence. 
Some products of cracking are useful as 
Hydrogen gas is a ...
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AQA GCSE Chemistry Paper 1 Questions And Answers Rated A+.
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AQA GCSE Chemistry Paper 1 Questions And Answers Rated A+. 
 
 
 
 
 
What is an *atom*? - correct answer. smallest part of an element 
 
What is an *element*? - correct answer. a substance that contains only one type of atom 
 
What are *chemical symbols*? - correct answer. - the letter or pair of letters that represents an element. 
- first letter is always capitalized 
 
What are *compounds*? - correct answer. substances in which atoms of two or more elements, which are chemically...
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MCAT AAMC Question Packs Mixed ALL SOLUTION LATEST EDITION 2024 GUARANTEED GRADE A+
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temperature is related to KE how? 
temp is the average kinetic energy 
thermal energy is related to KE how? 
thermal energy is the total KE 
Brainpower 
enthalpy of fusion is ALWAYS greater than enthalpy of vaporization because? 
it has to break more bonds (solid --> liquid) 
the amount of heat depends on (2 factors) 
1. the type of substance 
2. the amount of the substance 
during a phase change does temperature change? 
NO 
if an archaebacerial species lives in a pool that is 0.01 M HCL wh...
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AQA GCSE Combined Science Trilogy - Chemistry - Paper 2 Revision Questions with Complete Solutions 2024/2025
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pure substance - Ans .single element, compound or substance not mixed with another 
substance 
 physical processes - Ans .mixtures can be separated by... 
 simple distillation - Ans .evaporating water and condensing it in a separate container 
 fractional distillation - Ans .evaporating liquids with different boiling points 
 filtration - Ans .screening and sieving to remove solids 
 chromatography - Ans .using a solvent to separate pigments so you can identify them 
 crystallisation - Ans .ev...
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