The science of how Messi keeps the ball close to himself photo credit: ZaleDesigns Messi is a magician with the ball at his feet. He's in my opinion the best player in the sense that he can control the ball so well, runs so fast with the ball & changes the direction at full speed like it's a walk in the park. For starters he started playing very early (at 3) which is crucial if you want to be a good player. In that aspect, he's God gifted as he had dribble skills which is genetic in my opinion. Height He is short which means a low center of gravity so it's difficult to push him off the ball. That's why we see that anyone rarely can topple him down, instead players much larger than him lose possession to him. So his short height suits his style of play & is a blessing in disguise. Change of pace Messi changes his pace really well. He starts slow and runs directly at the defender which means the defender has to stop & focus on him. When he reac...
CHEMISTRY LIKELY QUESTIONS IN 2020/2021 JAMB
by-by
In this essay, we'll look at what jamb will set in chemistry in 2021/2022, as well as some of the most commonly asked science questions.
So, today, I'm going to discuss some crucial points that all jamb applicants taking chemistry examinations in the 2020/2021 jamb should be aware of.
Francium: this chemicals element has an Atomic number of 87 and a symbol of French and it life span is just 22 minutes. . When going through jamb questions and answers I have seen this question pop up repeated times
DIAMOND: this is recognized as one of the most hardest substance/ carbon. I will like you to go through your text books and perhaps study everything about diamond
Hydrogenation: this word simply means to treat with hydrogen. Hydrogenation is usually use to deplete most organic compound.
Please note that when you Hydrogenate Alkynes you will get Alkanes
Do you know that the law of Definite Proportion and Constant Composition are the same? Should in case you don’t know please read this law and how they relate together.
Atomic number: I will advise you to study the periodic table carefully, if possible cram it because i have seen hundreds of questions that centered much on this area.
Electrons :study everything that has to do with electrons. Remember that electrons revolves around the atom.
Catenation: try to understand what the term Catenation is, note where they mostly occur.
Identify those elements that combine with carbon to form compound. I will list some here, please it’s your responsibility to read deeper in this areas.
- Hydrogen
- Oxygen
- Chlorine
- Nitrogen
- Bromine
- Phosphorus
TRY to understand why Pure substances have boiling and melting point
What jamb usually set in 2021/2022 chemistry
Jamb exam board are also known to ask questions on radioactive material. But example of radioactive material are:
- Uranium,
- Thorium
- Polonium.
Viscosity: this means internal friction in fluid
When you Dissolves Calcium in water you get CaO.
Read more about the invention of Cathode ray tube whose idea was what gave birth to what we know as television.
Oxy-acetylene flame is mostly used in welding or joining two metals
Find out more information about R.A Millikan he stated that charge of an electron to be –1.60×10-19C (I have seen this question like 15 times in past jamb chemistry questions)
What jamb might sets in 2020/2021 chemistry
Note the form in which Aliphatic Hydrocarbons can exist.. Let me help you here they are:
- Cyclic,
- Acyclic
- or Alicyclic.
Dmitri T. Mendeleev's study how he contributed to the development of the periodic table
CONGENERS: please understand what this term means and examples ( element in the same group)
They might ask you “what is the lightest gas?” Just have it in mind that it is Free Hydrogen (H2)
Understand the concept on how water boil (saturated vapor presure = atmospheric pressure)
List factors affecting the boiling point ( study this point very well) let me help you to list them
- volatility,
- polarity
- impurity.
Always understand that nuclear energy comes from nuclear fusion
What jamb sets in 2020/2021 chemistry
And also understand that the sun energy is as a result of nuclear fusion
Another name for transmutation is still the same as Radioactivity
Understand that Florin is one of the most reactive non metal
Always have it in mind that nucleus is positive
Study about natural and artificial radioactive.
Do you know that zero is the lowest oxidation state of Iron? Please have this at the back of your mind
Read about the history of radioactive and who suggested the name (Marie Curie) and who discovered it (Antoine Becquerel)
Please understand that Quantum Numbers don’t point to atoms but ELECTRONS… (jamb uses this question to confuse candidates)
Thanks for reading.
SOURCE: The original article is gotten from youwinconnect.org
EDITED BY: timothy Thomas
Comments
Post a Comment