National 4/5 chemistry everyday consumer products revision homework
Uddingston Grammar School
Nat4/Nat5 Chemistry
Everyday Consumer Products: Homework 7
National 4 1. The grid contains the name of some chemical processes below. A
Respiration
B
Fermentation
C
Filtration
D
Photosynthesis
E
Distillation
F
Cracking
a) Identify the process to separate alcohol and water. 1KU
b) Identify the process in which chlorophyll absorbs light energy. 1KU
c) Identify the two processes in which carbon dioxide is produced. 1KU
2. Flowers produce a sweet tasting liquid called nectar. Nectar contains a mixture of sugars such as sucrose and fructose.
a) To which family of compounds to sucrose and fructose belong. 1KU Glucose can be broken down to form alcohol in the presence of an enzyme. b)
i. What is the chemical name for the alcohol produced. 1KU ii. What is an enzyme? 1KU iii. Give another example of an enzyme and its use. 1PS
3. In the manufacture of malt vinegar, starch reacts with water to produce glucose. Glucose is converted to carbon dioxide and ethanol using an enzyme. Ethanol is oxidised, by bacteria, producing malt vinegar. (a) Use the above information to complete the flow chart.
2PS
(b) The equation for one of the processes is: C6H12O6 ® C2H50H + CO2 Balance this equation. 1PS National 5 1. Sweets, such as pineapple cubes, contain the artificial flavouring methyl butanoate. a) To what family of compounds does methyl butanoate belong to? 1KU Methyl butanoate can be broken down to form an alkanol and an alkanoic acid. b) Name this type of reaction. 1KU
c) Draw the full structural formula for the alkanoic acid and the alcohol formed from the breakdown of methyl butanoate. 2PS 2. Ethanoic acid is more commonly known as vinegar. a) Draw the structure of ethanoic acid. 1KU
b) Ethanoic acid can be reacted with methanol to form an ester, which is used
Nat4/Nat5 Chemistry
Everyday Consumer Products: Homework 7
National 4 1. The grid contains the name of some chemical processes below. A
Respiration
B
Fermentation
C
Filtration
D
Photosynthesis
E
Distillation
F
Cracking
a) Identify the process to separate alcohol and water. 1KU
b) Identify the process in which chlorophyll absorbs light energy. 1KU
c) Identify the two processes in which carbon dioxide is produced. 1KU
2. Flowers produce a sweet tasting liquid called nectar. Nectar contains a mixture of sugars such as sucrose and fructose.
a) To which family of compounds to sucrose and fructose belong. 1KU Glucose can be broken down to form alcohol in the presence of an enzyme. b)
i. What is the chemical name for the alcohol produced. 1KU ii. What is an enzyme? 1KU iii. Give another example of an enzyme and its use. 1PS
3. In the manufacture of malt vinegar, starch reacts with water to produce glucose. Glucose is converted to carbon dioxide and ethanol using an enzyme. Ethanol is oxidised, by bacteria, producing malt vinegar. (a) Use the above information to complete the flow chart.
2PS
(b) The equation for one of the processes is: C6H12O6 ® C2H50H + CO2 Balance this equation. 1PS National 5 1. Sweets, such as pineapple cubes, contain the artificial flavouring methyl butanoate. a) To what family of compounds does methyl butanoate belong to? 1KU Methyl butanoate can be broken down to form an alkanol and an alkanoic acid. b) Name this type of reaction. 1KU
c) Draw the full structural formula for the alkanoic acid and the alcohol formed from the breakdown of methyl butanoate. 2PS 2. Ethanoic acid is more commonly known as vinegar. a) Draw the structure of ethanoic acid. 1KU
b) Ethanoic acid can be reacted with methanol to form an ester, which is used