Chemistry Quiz

1. What is the basic unit of matter?

• A. Molecule
  

• B. Atom
  

• C. Electron
  

• D. Compound

2. Which subatomic particle has a positive charge?

• A. Neutron
  

• B. Electron
  

• C. Proton
  

• D. Photon

3. Where are protons and neutrons located in an atom?

• A. Electron cloud
  

• B. Shell
  

• C. Orbit
  

• D. Nucleus

4. Which subatomic particle has no charge?

• A. Electron
  

• B. Proton
  

• C. Neutron
  

• D. Ion

5. The number of neutrons can be found by:

• A. Atomic number – mass number
  

• B. Mass number – atomic number
  

• C. Protons + electrons
  

• D. Electrons – protons

6. 6. Which K-pop group is known for songs like “Stay Gold”?
   

• A. EXO
  

• B. BLACKPINK
  

• C. BTS
  

• D. TWICE

7. Which family in the periodic table contains very reactive metals with 1 valence electron?

• A. Group 2A
  

• B. Group 7A
  

• C. Group 8A
  

• D. Group 1A

8. 8. Halogens are located in which group?

• A. Group 1A
  

• B. Group 8A
  

• C. Group 7A
  

• D. Group 2A

9. 9. Noble gases have how many valence electrons (except He)?

• A. 6
  

• B. 7
  

• C. 8
  

• D. 2

10. 10. What is a unique property of noble gases?

• A. Highly reactive
  

• B. Nonmetals that form salts
  

• C. Inert and non-reactive
  

• D. Form acids with water