Chemistry Quiz 34 (20 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Acids taste

Correct Answer: B) Sour.

2. Being able to pull metal into thin wires

Correct Answer: D) Ductile.

3. A positively or negatively charged atom.

Correct Answer: C) Ion.

4. Charged particles.

Correct Answer: A) Ions.

5. A 22.4-L sample of which of the following substances, at STP, would contain 6.02 X 1023 representative particles?

Correct Answer: A) Oxygen.

6. The inherited traits of an organism are controlled by

Correct Answer: C) DNA molecules.

7. What is the meaning of + used in a chemical equation?

Correct Answer: B) Reacts with.

8. No attractive force between particles

Correct Answer: C) Gas.

9. Energy is ..... when bonds break.

Correct Answer: D) Absorbed.

10. Convert 436 K to degrees Celsius.

Correct Answer: B) 163.

11. What cells cause blood to clot?

Correct Answer: C) Platelets.

12. The first energy level can hold up to how many electrons?

Correct Answer: C) 2.

13. The central region of an atom where its neutrons and protons are is called

Correct Answer: A) Nucleus.

14. A heterogeneous mixture can be separated by all of the following methods EXCEPT .....

Correct Answer: D) Mechanical separation.

15. An atom with extra neutrons in its nucleus is called a/an .....

Correct Answer: D) Isotope.

16. The major theory of reaction rate is called

Correct Answer: A) Collision theory.

17. If the atomic number is 10 and the atomic mass is 23.10, how many protons does that atom have?

Correct Answer: A) 10.

18. What do you call the table of elements?

Correct Answer: D) Periodic table.

19. Chemical bonding occurs so that atoms can

Correct Answer: D) Obtain complete outermost energy levels.

20. This element is the backbone of all organic molecules .....

Correct Answer: B) Carbon.