Chemistry Quiz 42 (25 MCQs)

Quiz Instructions:

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1. What is the symbol of Chromium

2. What is the molality when 0.75 mole isdissolved in 2.50 L of solvent?

3. Found in the nucleus of an atom, this subatomic particle has a neutral (or no ) charge

4. Which gas is used by the green plants in the process of photosynthesis to synthesize sugar or energy rich organic compounds?

5. How many valence electrons are in the Halogen family elements?

6. Group of elements whose ending e-configuration is s1, most reactive metals with the exception of hydrogen. Easily lose electrons.

7. A judgment based upon the results of an experiment is a _____

8. How are mixtures and solutions different form each other?

9. PVC pipe is an example of which of the following?

10. A mixture can be classified as a solution, suspension or colloid based on the _____

11. A forensic scientist would be a specific type of this chemist.

12. In this equation 2NaF + Br2 $\rightarrow$2NaBr +F2The underline part is a _____

13. Matter that has a definite shape and a definite volume is

14. How do covalent bonds form?

15. Atomic Mass is the number of

16. What are the uses of silicone-butadiene rubber?

17. An element has a fixed composition because it contains _____ type of atom

18. What is used to predict the ground state of an atom?

19. A person with hypothermia has a body temperature of 34.8 $^ \circ$C. What is that temperature in degrees Fahrenheit?

20. Mass of one mole of Mg(OH)2

21. Fats are immiscible in water because _____

22. If an element is shiny, malleable, and a good conductor, you would be looking for a _____

23. What type of substance is gold?

24. What is the difference between HO and He?

25. Wood burning is an example of _____