Evaluation Questions on "Basic Chemistry for Tertiary Institution students" - 3 Steem Prize for Correct Answers

Hello teachers, students, and researchers, I am here again today, Sunday, 5th April, 2020, to share this evaluation questions to refresh your minds on Basic Chemistry.

I below compiled a set of guide evaluation questions on "Basic Chemistry" that would help engage teachers/students during this stay-at-home period.

Time Allowed for Test: 1 hour
Instructions: Answer all questions. Some are subjective and some require statements as answers.
Prize: Feel free to use the comments section of this post to attempt the questions. First correct entry wins 3 Steem.

  1. The process where H2O turns into vapor is called ___
  2. The process where vapor turns into liquid is called ___
  3. Differentiate between melting and freezing processes.
  4. The process by which a solid changes directly to vapor (gas) without first forming the liquid is called ___
  5. Describe a simple experiment to illustrate magnetization process
  6. Atoms combine or join together to form _
  7. _ is a substance which cannot be split into two or more simpler substance by any known chemical process.
  8. An element is made up of ___.
  9. All gases exists as ___.
  10. Differentiate between a compound and a molecule
  11. The mixture of two or more metals are called __.
  12. Brass is a mixture of and .
  13. Calcium trioxocarbonate (IV) is a compound of , and ____.
  14. State the two division of paper chromatography.
  15. What is the valency of tetraoxosulphate (vi) Ion SO42-
  16. What is the valency of Hydrogen trioxocarbonate (IV) ion HCO3-
  17. State the valency of tetraoxophosphate (v) Ion PO43-
  18. Define the term valency.
  19. State the molecular formula of calcium trioxonitrate (V)
  20. State the molecular formula of Lead II chloride octahydrate.
  21. Differentiate between molecular and structural formula.
  22. State a balanced chemical equation for the decomposition of potassium trioxochlorate (V) into potassium chloride and oxygen.
  23. Calculate the molar mass of Potassium trioxochlorate (V) KClO3
  24. State the law of conversation of mass.
  25. In an experiment to illustrate the law of conservation of mass and are placed respectively in a test tube and conical flask.
  26. State the law of multiple proportion.
  27. Differentiate between chemical formula and equation
  28. State the condition necessary for a chemical equation to be useful
  29. What do you mean by Stoichiometry of reaction.
  30. One of the following is not the reasons Stoichiometry is studied: a) To establish that the chemical equations are true b) To decide how much of reactant is required to give a certain amount of product c) To determine the amount of sugar in solution.
  31. A mole is a number of particle, these particles could be , , _ or
  32. State another name for the number of particles in a mole concept which is approximately 6.02×1023 in magnitude.
  33. Why was the law of octave in periodic table classification?
  34. What determines the nature of an atom which also distinguishes it from all other atoms.
  35. Briefly explain the John Dobereiner’s theory of periodic table classification.
  36. State the three isotopes of Hydrogen.
  37. State why Beryllium is used as Atomic fuel containers and for x-ray apparatus production.
  38. In the earliest attempt for Periodic table classification, which of the scientist was the first to point out a systematic relationship among the elements.
  39. In contrast to Lothar Meyer, Mendeleev used chemical properties like what and what to illustrate the Periodic Law.
  40. The effort to reveal the secrets of the periodic table was led by the following scientists except one.


Answers will be shared tomorrow.

I am your Research Assistant @Uyobong. We hope to meet again tomorrow for some helpful educational research tips. Feel free to use the comment section of this post to ask questions so we can interact the more.

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