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Chemistry Quiz 30 (25 MCQs)

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1. The most electronegative element among the following is
2. Atoms tend to be stable and nonreactive if they have _____ valence electrons.
3. The most important element in organic chemistry. It has 4 valence electrons that can form 4 stable covalent bonds.
4. What make atoms react with each other and create bonds?
5. Which type of reaction is:2 K + MgBr2 $\rightarrow$ 2 KBr + Mg
6. One or two letter character that is used to identify an element
7. When you mix salad oil and water they immediately separate because
8. Which of the following refers to the attraction between ionic and polar molecules?
9. What type of chemical bond is formed between two atoms when electrons are shared?
10. Margaret found an unknown object on the ground while walking on the beach. She discovered that it shatters easily, it does not conduct heat or electricity, and is not shiny. What type of object did she find?
11. Type of intermolecular force present in HF.
12. How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide?
13. Which of the following is produced during the formation of photochemical smog?
14. The energy of the moving particles of a substance is
15. One of the properties all acids share is
16. If the number of protons equal the number of _____, the atom will have no charge
17. The first energy orbital of an atom can hold up to _____ electrons.
18. How many oxygen atoms are in the chemical formula (2Fe2O3)?
19. What is the electron configuration of Sulfur using noble gas method?
20. When an atom loses a valence electron, it becomes a(n) _____ ion.
21. Which subatomic particles contribute the most to the mass of an atom?
22. Which of the homologous series below does not contain C=O?
23. The following laboratory glass wares are used for measuring liquid, which is best to use in getting density? The following laboratory glass wares are used for measuring liquid, which is best to use in getting density?
24. A substances that dissolves in a liquid
25. The number of moles of solute present in 1 kg of a solvent is called its
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