Chen quiz

1. Which particle has a positive charge?

• 1. Proton

• 1. Neutron

• 1. Electron

• 1. Positron

2. Which particle is found in the nucleus and has no charge?

• 2. Proton

• 2. Electron

• 2. Neutron

• Ion

3. Which subatomic particle is the lightest?

• 3. Proton

• 3. Neutron

• 3. Electron

• 3. Nucleus

4. The atomic number of an element tells you the number of

• 4. Protons

• 4. Neutrons

• 4. Electrons only

• 4. Protons + neutrons

5. The mass number of an atom is the sum of:

• 5. Protons only

• 5. Protons + neutrons

• 5. Neutrons + electrons

• 5. Protons + electrons

6. An atom with 19 protons and 20 neutrons has a mass number of

• 6. 19

• 6. 20

• 39

• 59

7. Isotopes of the same element have different numbers of

• 7. Protons

• 7. Neutrons

• 7. Electrons

• 7. Charges

8. Carbon-14 has how many neutrons? (Z = 6)

• 6

• 8

• 12

• 14

9. Oxygen-18 has:

• 9. 8 protons, 8 neutrons

• 9. 8 protons, 10 neutrons

• 9. 10 protons, 8 neutrons

• 9. 18 protons

10. Two isotopes of chlorine are Cl-35 and Cl-37. Their difference is in:

• 10. Protons

• 10. Neutrons

• 10. Electrons

• 10. Atomic number