7565367
Descripción
Test por Matthew Reid, actualizado hace más de 1 año
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Creado por Matthew Reid
hace casi 8 años
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Pregunta 1
Pregunta
What function group do the natural chemicals, esters, have?
Respuesta
-
-COOH-
-
-COO-
-
-COH-
Pregunta 2
Pregunta
What forms to give an ester?
They are formed from an [blank_start]alcohol[blank_end] and [blank_start]carboxylic acid[blank_end]. This is called an [blank_start]esterification[blank_end] reaction.
Respuesta
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alcohol
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sodium
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water
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weak acid
-
vegetable oil
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carboxylic acid
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vegetable oil
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unsaturated fatty acids
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esterfication
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ethyl ethanoation
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ester distillation
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esterification
Pregunta 3
Pregunta
Esters aren't very volatile.
Respuesta
- True
- False
Pregunta 4
Pregunta
Esters are used to make [blank_start]flavourings[blank_end] and [blank_start]aromas[blank_end]
Respuesta
-
flavourings
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aromas
Pregunta 5
Pregunta
• Some esters are used as [blank_start]solvents[blank_end] for paint, ink, glue, etc.
• They are also used as [blank_start]plasticisers[blank_end] - they're added to [blank_start]plastics[blank_end] to make them more flexible.
Respuesta
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plasticisers
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catalysts
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nanoparticles
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clothes
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rubbers
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plastics
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PVCs
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distillants
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solvents
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reactants
Pregunta 6
Pregunta
Fats and oils are esters of glycerol and fatty acids?
Respuesta
- True
- False
Pregunta 7
Pregunta
Animal fats have mainly [blank_start]saturated[blank_end] hydrocarbon chains. They contain very [blank_start]few[blank_end] C=C. They are normally [blank_start]solid[blank_end] at room temperature.
Respuesta
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saturated
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few
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solid
Pregunta 8
Pregunta
Vegetable oils have mainly [blank_start]unsaturated[blank_end] hydrocarbon chains. They contain [blank_start]a lot[blank_end] of C=C. They are normally [blank_start]liquid[blank_end] at room temperature.
Respuesta
-
unsaturated
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a lot
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liquid
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