Quiz
Q1. Which particle carries a negative charge?
A. Proton
B. Neutron
C. Electron
D. Nucleus
Q2. The mass of a proton is approximately:
A. Equal to electron
B. Zero
C. 1 amu
D. 10 amu
Q3. Who discovered the electron?
A. Rutherford
B. Chadwick
C. Thomson
D. Dalton
Q4. Neutrons are located in the:
A. Orbitals
B. Shells
C. Nucleus
D. Outside atom
Q5. Atomic number represents:
A. Neutrons
B. Protons
C. Electrons only
D. Mass
Q6. Which particle has no charge?
A. Proton
B. Electron
C. Neutron
D. Ion
Q7. Isotopes differ in number of:
A. Protons
B. Electrons
C. Neutrons
D. Charges
Q8. The charge of proton is:
A. −1
B. +1
C. 0
D. +2
Q9. Which particle has the least mass?
A. Proton
B. Neutron
C. Electron
D. Alpha particle
Q10. Number of protons in an atom is equal to:
A. Mass number
B. Atomic number
C. Neutron number
D. Isotope number
Answers
1-C, 2-C, 3-C, 4-C, 5-B, 6-C, 7-C, 8-B, 9-C, 10-B