Chemistry Knowledge Challenge
Chemistry Knowledge Challenge
Test your understanding of chemistry with our engaging quiz! This 10-question challenge covers various topics in chemistry, such as ionic equations, empirical formulas, and gas reactions. Perfect for students, teachers, and anyone passionate about the subject.
Key topics include:
- Neutralization reactions
- Mole calculations
- Ionic and molecular formulas
- Gas laws
All neutralization reactions have the same ionic equations?
Because the properties of acid and base disappear when they react together
Because all neutralization reactions produce liquid water molecule
A / B
Because in neutralization reactions,water isn't found in form of ions but in the form of molecules
Other
Please Specify:
The unit of quantity that contains a molar mass of substance
Molar mass
Molecular mass
The mole
No correct answer
It is the amount of a substance that contains Avogadro's number of particles.
Avogadro's number
Molar mass
The mole
No correct answer
Dissociation of some ionic compounds into ions when they are:
Melted
Dissolved in water
A / B
Precipitated
Ionic equation used to express:
Some physical process
Some chemical process
A /B
Some biological process
Calculat the empirical formula of a compound containing 25.9%nitrogen and oxygen 74.1% [N=14, O=16]
N₂O₅
N₃O₆
N₄O₅
N₆O₃
Calculate number of molecules a pill of vitamin{c}[C₈H₈O₆] it's mass is 1.76gm.
[C=12, O=6, H=1]
6.02×10²¹
12.02×10²²
16.02×10²²
No correct answer
Find the remaining volume of 60 liters of hydrogen gas that react with 20 liters of oxygen giving water
25 liters
20 liters
32 liters
17 liters
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