Tough Chemistry Revision Quiz

10 Questions | By Mrmann003 | Last updated: Nov 22, 2022 | Total Attempts: 5920

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How much do you love chemistry? Do you love chemistry enough to pass this tough chemistry revision quiz with a good score? If so, then you must play this quiz. Chemistry is already considered one of the toughest subjects out there by many students. Here, we will not ask you the basic elements and their symbols, but you will be introduced to questions that will really put some stress in your brain. Let's see how well you do.

Questions and Answers

1.

Identify the type of reaction: N₂ + H₂ -----> NH₃
- A.
  
  Combination
- B.
  
  Precipitation
- C.
  
  Decomposition
- D.
  
  Combustion
2.

Identify the type of reaction: H₂O ---> 2H₂ + O₂
- A.
  
  Combination
- B.
  
  Precipitation
- C.
  
  Decomposition
- D.
  
  Combustion
3.

This is a diagram of which element?
- A.
  
  C
- B.
  
  He
- C.
  
  Na
- D.
  
  Au
4.

Identify the type of reaction: AgCl + BaBr₂ ----> AgBr + BaCl₂
- A.
  
  Combination
- B.
  
  Precipitation
- C.
  
  Decomposition
- D.
  
  Combustion
5.

This is a diagram of which element?
- A.
  
  O
- B.
  
  Mg
- C.
  
  Na
- D.
  
  Ag
6.

Look carefully at this diagram of the atoms in some substances. Which letter represents a mixture of elements?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
- E.
  
  E
- F.
  
  F
7.

Little Jonny is doing an experiment. He notices after mixing two liquids that his new solution is becoming cloudy. Little Jonny is like, 'Yo, what's going on here?!' - give little Jonny a tip to help him understand what is going on.
- A.
  
  "Hey Jonny, I think your observation could be evidence of a combustion reaction."
- B.
  
  "Hey Jonny, I think your observation could be evidence of a decomposition reaction."
- C.
  
  "Hey Jonny, I think your observation could be evidence of a precipitation reaction."
- D.
  
  Sorry, Johnny, no idea!
8.

Little Jonny is doing an experiment. He notices after mixing two chemicals that his new solution is bubbling. Little Jonny is like, 'Yo, what's going on here?!' - give little Jonny a tip to help him understand what is going on....
- A.
  
  "Hey Jonny, bubbles are evidence of a precipitation reaction."
- B.
  
  "Hey Jonny, your observation means that a gas is being produced."
- C.
  
  "Hey Jonny, bubbles are evidence of a physical change."
- D.
  
  Sorry, Johnny, no idea!
9.

Little Jonny has permission from his teacher to test the gas product with a match. When he does this, a high pitch pop sound is heard with a flash of light! "wow," says Little Jonny. "What type of chemical reaction was that?!" Help Little Jonny out. Which statement is the MOST correct?
- A.
  
  "Hey Jonny, that pop sound was the sound of compounds breaking down in a decomposition reaction."
- B.
  
  "Hey Jonny, when you burn something, you see a release of energy in the form of light and heat. This should tell you that it is a combustion reaction."
- C.
  
  "Hey, Jonny, when you burn something, you use the surrounding oxygen gas as a reactant which combines with your other reactant. A sudden release of energy in the form of light, sound, and heat (pop) is observed, and all of this is characteristic of a combustion reaction."
- D.
  
  "Sorry, Jonny, no idea!"
10.

How many carbon and oxygen atoms does a CO₂ molecule contain?
- A.
  
  2 oxygen atoms and 2 carbon atoms
- B.
  
  1 carbon atom and 1 oxygen atom
- C.
  
  1 oxygen atom and 2 carbon atoms
- D.
  
  2 oxygen atoms and 1 carbon atom