QUIZ CHEMISTRY FORM 5

Diagram 1 shows the way to store a solution.

• Easily decomposed

• Easily explode

   

• Volatile and flammable

   

• Easily reacts with moisture in the air

   

Which of the following inter-conversions of matter causes the kinetik energy of particles increases?

• Water to Ice

• Ice to Steam

• Steam to Water

• Steam to Ice

Which of the following scientists discovered electron?

 

• John Dalton

• Niels Bohr

• J.J Thompson

• Ernest Rutherford

X^2- ion has electron arrangement of 2.8.8

 The number of neutrons of atom X is 16

 

What is the nucleon number of atom of element X?

• 30

• 32

• 34

• 36

Which of the following are the similarities of isotopes of elements?

• Number of neutrons                

   

• Number of protons         

• Physical properties        

• Chemical properties

Which of the following is matched correctly?

 

• Sodium-24

  Detector to study sewage

• Lead- 210

  Estimation of the age of artifacts

• Cobalt-60   
  Sterilising surgical tools

• Iodine-131

  Detect leakage in underground pipes

Which of the following substances contain the same number of atoms as in 0.2 moles of hydrogen gas, H₂?

• 0.1 moles of argon gas, Ar

   

• 0.2 moles of water, H₂O

• 0.1 moles of sulphur trioxide, SO₃

   

• 0.4 moles of magnesium, Mg

The formula for M nitrate salt is MNO₃. What is the formula for M phosphate salt?

• MPO₄

• M₂PO₄

• M₃PO₄

• M₂(PO₄)₃

Diagram 5 shows the apparatus set-up to determine the empirical formula of a metal oxide.

Which of the following metal use the same method to determine its empirical formula?

• Zinc

• Lead

• Silver

• Aluminium

What is the basic principle used in the arrangement of elements in the Periodic Table of Elements?

• Ascending nucleon number

• Ascending relative atomic mass

   

• Ascending proton number

   

• Ascending number of electron