7565367
Descrição
Quiz por Matthew Reid, atualizado more than 1 year ago
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Criado por Matthew Reid
quase 8 anos atrás
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Questão 1
Questão
What function group do the natural chemicals, esters, have?
Responda
-
-COOH-
-
-COO-
-
-COH-
Questão 2
Questão
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.
Responda
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alcohol
-
sodium
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water
-
weak acid
-
vegetable oil
-
carboxylic acid
-
vegetable oil
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unsaturated fatty acids
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esterfication
-
ethyl ethanoation
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ester distillation
-
esterification
Questão 3
Questão
Esters aren't very volatile.
Responda
- True
- False
Questão 4
Questão
Esters are used to make [blank_start]flavourings[blank_end] and [blank_start]aromas[blank_end]
Responda
-
flavourings
-
aromas
Questão 5
Questão
• 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.
Responda
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plasticisers
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catalysts
-
nanoparticles
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clothes
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rubbers
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plastics
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PVCs
-
distillants
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solvents
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reactants
Questão 6
Questão
Fats and oils are esters of glycerol and fatty acids?
Responda
- True
- False
Questão 7
Questão
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.
Responda
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saturated
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few
-
solid
Questão 8
Questão
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.
Responda
-
unsaturated
-
a lot
-
liquid
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