Chemistry Quiz 55 (20 MCQs)

Quiz Instructions

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1. In the periodic table, what does C stand for?

Correct Answer: C) Carbon.

2. Why is phosphorus kept under water?

Correct Answer: D) To save it from catching fire when exposed to dry air.

3. Symbol for silver in periodic table is

Correct Answer: A) Ag.

4. Which is the correct general formula for ketones?

Correct Answer: B) CnH2nO.

5. Which of these elements forms a molecular solid?

Correct Answer: C) Iodine.

6. Which one of the following characteristics is INCORRECT for all of the members of the same homologous series?

Correct Answer: D) Same ratio of atoms.

7. If I pour the water off after I boil the banana, this method is an example of .....

Correct Answer: C) Decantation.

8. Everywhere in the universe an object's ..... is the same.

Correct Answer: B) Mass.

9. Identify the Electron Configuration for Aluminum (Al)

Correct Answer: A) 1s2 2s2 2p6 3s2 3p1.

10. How many sig figs are in 807

Correct Answer: C) 3.

11. Which Russian scientist created the first Periodic Table in 1896?

Correct Answer: C) Mendeleev.

12. In which group are the halogens found?

Correct Answer: C) 17.

13. Liter converts to

Correct Answer: A) 1000 mL.

14. The substance of specific properties that do not depend on the amount of substance.

Correct Answer: B) Intensive properties.

15. Which type of reaction is:2 H3AsO4 $\rightarrow$ As2O5 + 3 H2O

Correct Answer: B) Decomposition.

16. Ionic bonds are chemical bonds formed by the

Correct Answer: C) Transfer of electrons from one atom to another.

17. Which biomolecule is responsible for insulation and energy storage?

Correct Answer: C) Lipid.

18. A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

Correct Answer: D) Nucleus.

19. A(n) ..... is a charged particle that forms when an atom gains or loses electrons

Correct Answer: B) Ion.

20. Si + S8 $\rightarrow$ Si2S4

Correct Answer: A) Synthesis (combination).