3337942
Description
Flashcards by Kerris Linney, updated more than 1 year ago
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Created by Kerris Linney
about 9 years ago
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| Question | Answer |
| Write down the displayed formula for a molecule with the molecular formula C3H8 | |
| Define the word 'hydrophobic' | The tail of the emulsifier which bonds to oil molecules |
| What is an emulsifier? | Emulsifiers help to stop the two liquids in an emulsion from separating out e.g, oil and water |
| What is the equation for making an ester? | Acid + Alcohol = Ester + Water |
| Which types of paint are water based? | Emulsion Paints |
| Why don't we eat uncooked potatoes? | Because they contain cellulose that humans cant digest. Cooking the potatoes breaks down the cellulose |
| True or False: In a fractionating column, the shortest hydrocarbons leave at the bottom | False, the shorter they are, the higher up they leave |
| What is cracking for? | Helps us get more of the oil that is in demand by taking a long chain alkanes into small chain alkanes and alkenes. |
| Which part of the emulsifier molecule is hydrophilic? | The head |
| Name 3 properties which a perfume needs to have | 1 non toxic 2 easily evaporates 3 doesn't react with water 4 doesn't irritate the skin 5 insoluble in water |
| What is a solution? | Mixture of a solute and a solvent that does not separate out |
| What is a solute? | Is the substance being dissolved |
| What does soluble mean? | It can be dissolved |
| What do phosphorescent pigments in paints do? | Glow in the dark, they absorb the light then store it and release it over a period of time |
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