This shows that the compound is an alkene. The alkenes also show the same physical trend due to the same reason. Fermentation is breakdown of sugars into smaller molecules by microorganisms. In simple words, it would turn from orange-brown to colorless. From this repeat unit, to find the monomer formula, we add double bond between C – C and remove the bonds on each of their sides. Chemistry Notes . Their general formula, physical and chemical properties. Thank you for these fabulous notes on organic chemistry. ChemistryNotes.com 0. If catalysts are not used, then the higher temperature is needed, which is a waste of energy. There are two types of polymerization, addition polymerization, and condensation polymerization. There was a problem with the link. Calculate the maximum volume of hydrogen, measured at r.t.p. Unit 1: States of matter . So most alcohols and carboxylic acids are liquids at room temperature. b. Fructose is a carbohydrate. The general formula of a homologous series gives the formula which shows how many hydrogen or another kind of atoms will be there for a given number of carbon atoms. I have emphasized on the topics which appear frequently in IGCSE chemistry exams. TOPIC C14: ORGANIC CHEMISTRY REVISION NOTES Organic chemistry is the chemistry of a huge number of compounds containing carbon. Organic Chemistry is the study of compounds based on hydrocarbons and their derivatives. Mixture of methane, ethane ,propane, butane , in LPG(Liquefied Petroleum Gas) used for domestic heating and cooking. Plastics that require CFC during production may contribute to global warming when the CFC is allowed to escape. My 19+ years of coaching experience (since 1999) with more than 1500 students from 180+ JCs and Secondary Schools has allowed me to understand the true reasons why students are not able to perform well in Chemistry. Crude oil is a fossil fuel because it’s formed from the fossils of dead creatures. Proteins have similar linkage to that of a nylon. This organic chemistry note for IGCSE chemistry will cover the three major homologous series Alkane, Alkene, and Alcohols. Mix bromine solution with alkene (for liquid alkenes – shake). (insufficient supply of oxygen causes incomplete combustion and produces carbon monoxide or soot(carbon) instead of carbon dioxide. Even in the chemical reaction of the same concept, the formula of ethanol formed seems to be incorrect and is unbalanced. biii. 4. Draw the displayed formula for ethene, bii. This because due to the carbon to carbon double bonds, the intermolecular forces are not that strong as it is in alkanes. - This is HYDROLYSIS. Uses of PVC: drain pipes, replacement windows, floor covering sheets, electrical insulator. Your email address will not be published. hydrocarbons which the combining capacity of the carbon atoms is not fully used, e.g. Thanks a lot for informing me. This is how different fractions of the crude oil are collected at different heights of the fractionating column. By naming the reagent and giving the observation, describe a simple test to confirm that olive oil contains an acid. produce toxic gas (such as hydrogen chloride) when burnt and this contributes to acid rain. Please note, the carbon atom within the functional group is also taken into consideration. Organic chemistry; 1. It also does not give any hint about the structure, like how the atoms are arranged in the molecule. For example, the molecular formula of pentene is C5H12 . Thank you so much! We will discuss their general formula, physical and chemical properties. Important Note, comes in IGCSE Chemistry exams: Carbon monoxide is a poisonous gas, attaches with hemoglobin more efficiently than oxygen, which reduces the supply of oxygen to the brain and causes death. Here are the conditions and reactions that occur in these two processes. The alkyl group position number and name is indicated before the prefix. But in crude oil, there are not enough fraction of the lighter hydrocarbons to provide for this demand. I have a taught IGCSE and IAL Chemistry for about 8 years. Also please refer to the Alkyl radical table above. Do not worry if you are still confused about what a functional group is. I know this is a bit confusing. 8a. i. Construct the balanced equation for the burning of ethanol.