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Chemistry Quiz 36 (25 MCQs)

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1. Which of the following elements has a complete outer shell?
2. What is the name of an element that has a charge?
3. What experiment led to the discovery of the electron?
4. The most abundant rare gas in the atmosphere is?
5. The first metal used by man was
6. Isotopes are the same elements with different number of _____
7. The macromolecules DNA and RNA are _____
8. This is the organized chart of elements.
9. Which of the following intermolecular force present in CHF3?
10. The monomer of a protein is a(n) _____
11. The saltiness of seawater is the result of this property
12. # neutrons + # protons = _____
13. What is the mass in grams of 6.25 mol of copper (II) nitrate?
14. Different atoms and/or molecules combined but not bonded
15. Most halogen form compounds by
16. Which acid is present in lemon?
17. What is a mixture of potassium nitrate powdered charcoal and sulphur called?
18. A substance with a pH of 8 has a pOH of
19. Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be
20. What element contains 26 protons?
21. The major component used in preparation of different types of glasses is
22. Which biomolecule contains pastas and breads?
23. What is the branch of physics that is relevant to chemistry in terms of how thermal energy converted to and from other forms of energy and how it affects matter?
24. An example of a gas is
25. Which of the following has the weakest intermolecular forces?
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