Chemistry Quiz 44 (25 MCQs)

Quiz Instructions:

Select an option to see the correct answer instantly.

1. Which of the following is not one of the 4 main elements found in all macromolecules?

2. What precipitate forms when you mix barium nitrate with sodium sulfate?

3. Pure substance made of only 1 type of atom

4. Which is NOT true about atom?

5. Long-term storage of energy

6. What SI unit is used to measure the number of representative particles in a substance?

7. Which of the following is not a major function of protein?

8. Diagrams that represent the valence electrons of atoms or molecules _____

9. Which of the following changes is a physical change of matter?

10. Acid rain is due to air pollution by?

11. Negatively charged particles found outside of the nucleus of an atom are called _____

12. According the the modern atomic theory, it is nearly impossible to determines an electrons exact

13. The single acid which dissolves gold is?

14. Energy stored inside chemical bonds is known as.

15. The energy that travels in electromagnetic waves is

16. Building blocks of carbohydrates

17. Physical combination of 2 or more substances not chemically combined that can be separated by physical means

18. Our rock candy created this formation

19. How many PROTONS would a mole of H atoms have?

20. Which method uses the boiling point differences by gradually heated a mixture? The substance that vaporize the easiest will separate first.

21. What is the mass number of an element?

22. If Gibbs free energy is greater than 0, what is the possible chemical reaction?

23. The items amenable to detection by soft x-rays are

24. What is 5.260 x 10 5 expressed in standard notation?

25. A temperature increase causes the particles _____