Chemistry 101 Lesson
my brother suck in chemistry
5.5/30 is not impressive
and nothing to be proud of
though if you look through his paper,
the chem paper is easy shit
nothing to defend himself for
because the answers were all study-and-you-can-answer-type
as he didnt study,
he didnt get to answer shit
for example:
Q1. Hydrogen gas burns in oxygen to make water
Balance equation: H2 + O -> H2O
his answer: Ch4 + Cl2 -> 2C2l + 2hO2
???
wad the fuck sial?? how cum C and l in chlorine b separated sial??
Q2. Dilute hydrochloric acid is heated in zinc metal to produce zinc chloride and hydrogen gas
Balance equation: 2HCl + Zn -> ZnCl2 + H2
his answer: H2Cl2 + Zn4 -> H2Cl +ZnCl2
!!!!
help!!!
Q3. Use the names of the substances provided to answer this question
copper, ethanoic acid, helium, hydrochloric acid, argon, oxygen, steel, sulphuric acid
Name
(a) an alloy, steel
(b) a metallic element, copper
(c) an atmospheric pollutant, sulphur dioxide
(d) chemical name for vinegar, ethanoic acid
his answer,
(a) copper
(b) steel
(c) sulphur dioxide
(d) argon
for your info,
Argon is a unreactive colourless Class VIII gas or wad you called it Noble or Inert gas, that you can find in common house light bulbs
Helium , also like Argon, is another unreactive colourless Class VIII gas that is used for the helium balloons
Hydrochloric acid (HCl) u suckers usually use this in science labs all the time wad...u must b stupid not to know wad it is
Oxygen, i shant say more. who dont knoe wad oxygen is?i kick ur ass.
Q4. A sample of air was taken from an urban city.
(a) Name two pollutants that you would expect to find in the sample.
there are few more than 2 pollutants you could find in city life. instead of two, i'll just name a few to give you guys abit more choice
Pollutant 1 : Sulphur dioxide (SO2)
Pollutant 2: Carbon Monoxide (CO)
Pollutant 3: Oxides of Nitrogen (NO or NO2)
Pollutant 4: Lead (Pb)
(b) Explain HOW these two pollutants were formed. (the question is HOW and NOT 'by' or 'what')
Pollutant 1: Burning fossil fuels such as coals and oil
Pollutant 2: Exhaust fumes from imcomplete combustion of motor vehicle petrol
Pollutant 3: Exhaust fumes from motor vehicles and lightning
Pollutant 4: Exhaust fumes from motor vehicles
Q5. Name one difference between an alkane and alkene.
this is the easiest question anyone could do man..shame on you if you cant score on this
- Alkanes are saturated molecules consists of only single carbon-carbon covalent bonds
- Alkenes are unsaturated molecules consists of double carbon-carbon covalent bonds
the tip about writing differences is that if they ask you to name only ONE difference, you write in point form as above but if they ask you for A FEW differences, its good if you compare them in a table form
furthermore, naming differences questions are very common in exam papers.so study smart and memorise at least 3-4 differences. they wont ask you for more.
since my brother needs alot of help in Chem, i mite change this blog to Chem 101 lessons. Till the next tip...
00:08
