Chemistry Quiz 4 (25 MCQs)

Quiz Instructions:

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1. Which of the following is an example of a heterogeneous mixture?

2. What kind of bonding unequally shares electrons?

3. Which of the following is an example of physical property of matter?

4. The tendency of a substance to resist burning

5. A stoichiometric computation in which the mass of products is determined from the given mass of reactants

6. A neutral particle found in the nucleus of an atom

7. Which element is organic chemistry centered around?

8. Being able to hammer metal into a thin sheet is called

9. Bases turn litmus paper

10. The atoms of the same element which contains the same number of protons but different number of neutrons is known as _____

11. Building blocks of lipids

12. KNO3 $\rightarrow$ KNO2 + O2What coefficients are needed to balance the reaction?

13. How many valence electrons are present in Carbon?

14. When atoms combine, they may gain, lose, or share

15. The identity of an element can be determined on the basis of which of the following?

16. What is the family name for group 18?

17. What determines the identity of an atom?

18. The atomic number of carbon is 6. How many unpaired electrons are in its outer shell?

19. Which of the primary component of natural gas?

20. The electrons involved in bonding are

21. The center of an atom is called

22. Using their properties mixtures can be separated too. When iron and wooden match mixed and you wish to separate them, how would it be possible?

23. What is the mass of 6.25 mol of Cu(NO3)2?

24. The elements argon, krypton, and xenon are all non-metals. What property would these elements have in common?

25. What is the maximum capacity of electrons located in the 3rd main energy level?