Chemistry Quiz 23 (25 MCQs)

Quiz Instructions:

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1. How many hydrogens are in one molecule of water?

2. Which of the following is not a base physical quantity

3. Which one of the following shows the correct charges?

4. A solution with a pH of 10 has a higher concentration of

5. Electronic configuration of Aluminium ( Al ) is _____

6. Molality (m) = moles of solute / _____

7. The order of elements in the periodic table is based on

8. An electron-dot diagram shows only the

9. How many different oxides are formed by nitrogen?

10. Which element has an atom with the greatest tendency to attract electrons in a chemical bond?

11. An atom can be described as chemically inactive (will not form bonds) if its outermost electron shell contains _____ electrons.

12. Which macromolecule is the most abundant in our bodies?

13. N2 + 3H2 $\rightarrow$ 2NH3 How many moles of hydrogen are needed to react with 5 moles of nitrogen?

14. Which has a charge of 1+?

15. What is the pH of a solution that results from the complete neutralization of an HCl solution with NaOH solution?

16. The monomer of a protein is called _____

17. What happens when a neutral calcium atom becomes a calcium ion with a +2 charge?

18. If an atom has 5 protons and 4 electrons, what is its charge?

19. Atoms are mostly filled with?

20. All noble gases are?

21. The gases H2, O2, and N2 are considered to be _____

22. What is the noble gas configuration for phosphorus?

23. The transfer of electrons occurs during

24. Human bone does not contain

25. A bromine (Br) atom has _____ valence electrons