482161
Description
Flashcards by Samina Rashid, updated more than 1 year ago
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Created by Samina Rashid
over 10 years ago
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| Question | Answer |
| Draw methane | CH4 |
| Draw ethane | C2H6 |
| Draw methanol and ethanol | CH3OH CH3CH2OH |
| Draw ethanoic acid | CH3COOH |
| Draw an ester | CH3COOCH2CH3 |
| write a balanced symbol equation for: methane + oxygen = carbon dioxide + water | CH4 +2O2 = CO2 +H2O |
| why are alkanes not reactive? | because the C-H bond is very stable and does not break easily |
| why are alkanes called saturated hydrocarbons? | because they don't have any C=C double bonds |
| write the word equation for the fermentation of glucose | glucose = ethanol + carbon dioxide |
| name 2 carboxylic acids and their uses | ethanoic acid = vinegar citric acid = lemon juice |
| why are carboxylic acids known as weak acids | because they have a PH between 3-6 |
| Draw propane | CH3CH2CH3 |
| Draw butane | CH2CH2CH2CH3 |
| Give 2 uses of methanol and 2 uses of ethanol | methanol: as a fuel, antifreeze, industrial feedstock ethanol: wines/spirits, and as a solvent and a fuel |
| draw ethanol and methanol | CH3CH2OH CH3OH |
| compare the boiling points, solubility and structures of alcohols and alkanes | Draw structures and compare (OH in alcohols). alcohols mix with water easily, alkanes don't - they form a layer on top. Boiling points of alcohols higher because they form stronger intermolecular forces |
| write a word equation for ethanol and sodium. What would you see happening if you did this in the lab? | http://www.youtube.com/watch?v=aGaWwnMyKVE |
| What are the differences in the reactions of sodium with A) an alcohol B) an alkane and C) with water. | Alcohols react and give off hydrogen gas. Water also reacts but the reaction is more vigorous and alkanes don't react. |
| what 2 main igredients do you need to make an ester? | carboxylic acid and alcohol |
| write a word equation for the formation of an ester | carboxyllic + alcohol = ester + water |
| give 2 uses of esters | perfumes and flavourings |
| explain the laboratory procedure for making an ester | http://www.youtube.com/watch?v=7fgZDm7d8Xk |
| understand that fats are esters of glycerol and fatty acids | Natural fats and oils are esters. from glycerol and fatty acids. You should be able to draw them. |
| what is the difference between saturated and unsaturated fats? | Saturated fats do not have C=C |
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