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WorksheetsRubber Matter
Total questions: 12
Worksheet time: 14mins
What is the substance from bacteria that can cause coagulation of latex?
(a)
Name a substance that can prevent coagulation of latex.
(a)
Which of the following solution can coagulate latex? [can choose more than one]
formic acid
ethanoic acid
concentrated hydrochloric acid
methanoic acid
What is the name of monomer for latex?
(a)
Name the process to improve the property of natural rubber?
(a)
Which of the following are characteristics of vulcanised rubber? [can choose more than 1 answer]
More resistant to high heat
More resistant to oxidation
Less elastic than natural rubber
Less resistant chemical solution
Which of the following comparison between natural rubber and vulcanised rubber are correct? [can choose more than 1 answer]
Vulcanised rubber is more elastic than natural rubber.
Vulcanised rubber is harder than natural rubber.
Vulcanised rubber cannot withstand heat while natural rubber can withstand heat.
Vulcanised rubber cannot oxidise easily while natural rubber can oxidise easily.
Substance P turns white latex milk into yellow solid. What is substance P?
Ammonia solution
Ethanoic acid
Potassium hydroxide solution
Potassium chloride solution
A lorry wants to transfer latex from a rubber estate to a rubber factory. Which substance can be added to the latex to prevent it from coagulating?
Distilled water
Tetrachloromethane
Acetic acid
Diluted sodium hydroxide solution
What is the name of chemical substance that can form the sulphur cross - linkage in natural rubber?
(a)
Which of the following characteristics best describe the product in the diagram? [can choose more than 1 answer]
It can resistant to hot temperature
It is strong and hard
It can resistant to oxidation
It will melt when strong chemicals spill on it
Latex gloves are very important during this COVID-19 crisis. Which of the following statement is/are true about this latex glove? [can choose than 1 answer]
water proof
Elastic
It is made from natural rubber
It is made from vulcanised rubber
