Chemistry Question Review (2025-10-04)
Note: This post is not about HKDSE buy just common senses in Chemistry by extensive reading.
Question: Give a warning label for the chemical SO3.
Solution:
Don't inhale it!
Note: This post is not about HKDSE buy just common senses in Chemistry by extensive reading.
Question: Give a warning label for the chemical SO3.
Note: This post is not about HKDSE but just common senses in Chemistry by extensive reading.
Another question: read below:
Explain why sulphur will poison the catalysts.
Solution: Sulphur blocks the active sites.
Another question: Why are dilution of acids and alkalis always exothermic?
Solution: hydrogen bonds forms between protons from the acid (or hydroxide ions from the alkali) with water molecules.
Another question: Why fungi eat steroids?
Solutions: Most of the hormones found in human are actually steroids.
Hormones are made of fats, so fungi will eat them. As a corollary, if you have itchy scrotum on the surface, you get fungi on it, and you should never apply steroids as lotion otherwise the symptoms will exacerbate.
Solution: hydrogen bonds forms between protons from the acid (or hydroxide ions from the alkali) with water molecules.
Solution: hydrogen bonds form between protons from the acid (or hydroxide ions from the alkali) with water molecules.
Another question: Why will male secrete alkaline semen and female secrete lactic acids during sexual activities?
Solution: Recall the chemistry of pooping:
If your poop is soft, it is alkaline.
If your poop is hard, it is acidic.
As a corollary, your penis needs lubricants. If your semen is acidic, your penis will cut off adjacent objects such as your skin and your partner's vagina and bleeding will result.
Transvestite has prostate gland remaining intact. So his false vagina has a duct from the prostate such that it is alkaline. If he makes love with a male, the pH of their secetions in total will be high enough to corrode their genitals, thereby developing tumors.
That why a female will has her vagina secrete lactic acid to kill pathogens so as to prevent the vagina from being corroded by semens.
Solution: Recall the chemistry of pooping:
If your poop is soft, it is alkaline.
If your poop is hard, it is acidic.
As a corollary, your penis needs lubricants. If your semen is acidic, your penis will cut off adjacent objects such as your skin and your partner's vagina and bleeding will result.
Transvestite has prostate gland remaining intact. So his false vagina has a duct from the prostate such that it is alkaline. If he makes love with a male, the pH of their secetions in total will be high enough to corrode their genitals, thereby developing tumors.
That why a female will has her vagina secrete lactic acid to kill pathogens so as to prevent the vagina from being corroded by semens.
That's why a female will has her vagina secrete lactic acid to kill pathogens so as to prevent the vagina from being corroded by semens.
That's why a female will has her vagina secreted lactic acid to kill pathogens so as to prevent the vagina from being corroded by semens.
Another question: Explain why saliva is basic.
Solution: Saliva contains amylose to break down a starch, anylose, from what you eat.
The hydrolysis of amylose is accelerated by alkaline medium. Also, as with the previous question, if your saliva is acidic, the digested mixture will be hard enough to cut off you esophagus and you will die.
Solution: Saliva contains amylose to break down a starch, anylose, from what you eat.
The hydrolysis of amylose is accelerated by alkaline medium. Also, as with the previous question, if your saliva is acidic, the digested mixture will be hard enough to cut off you esophagus and you will die.
Solution: Saliva contains amylase to break down a starch, anylose, from what you eat.
Another question: What is fat acidic?
Solution:
Protons are formed in 2 ways:
1. Dissolving a carboxylic acids. Common fats contains aliphatic fatty acids that have a carboxyl group as well as >C==C< bonds.
2. Escaping from hydroxyl group. Phenol losing a proton in aqueous solution is acidic. Likewise, cortisol and vitamin C are acidic in aqueous state, where the escape of proton is a redox reaction.
Solution: Saliva contains amylose to break down a starch, anylose, from what you eat.
The hydrolysis of amylose is accelerated by alkaline medium. Also, as with the previous question, if your saliva is acidic, the digested mixture will be hard enough to cut off you esophagus and you will die.
Solution: Saliva contains amylase to break down a starch, anylose, from what you eat.
Solution: Saliva contains amylase to break down a starch, anlmylose, from what you eat.
Solution: Saliva contains amylose to break down a starch, anylose, from what you eat.
The hydrolysis of amylose is accelerated by alkaline medium. Also, as with the previous question, if your saliva is acidic, the digested mixture will be hard enough to cut off you esophagus and you will die.
Solution: Saliva contains amylase to break down a starch, anylose, from what you eat.
Solution: Saliva contains amylase to break down a starch, anlmylose, from what you eat.
Solution: Saliva contains amylase to break down a starch, amylose, from what you eat.
Solution:
Protons are formed in 2 ways:
1. Dissolving a carboxylic acids. Common fats contains aliphatic fatty acids that have a carboxyl group as well as >C==C< bonds.
2. Escaping from hydroxyl group. Phenol losing a proton in aqueous solution is acidic. Likewise, cortisol and vitamin C are acidic in aqueous state, where the escape of proton is a redox reaction.
Dissolving a carboxylic acid
Solution:
Protons are formed in 2 ways:
1. Dissolving a carboxylic acids. Common fats contains aliphatic fatty acids that have a carboxyl group as well as >C==C< bonds.
2. Escaping from hydroxyl group. Phenol losing a proton in aqueous solution is acidic. Likewise, cortisol and vitamin C are acidic in aqueous state, where the escape of proton is a redox reaction.
Dissolving a carboxylic acid
Some of them have no double bonds, and are mineral oils or even pure alkane.
嗱，椰子油係飽和脂肪嚟
同麵包上嘅豬油一樣，食得多塞血管