Subatomic Particles of an Atom

1. What is the smallest particle of matter?

• A. Atom

• B. Compound

• C. Element

• D. Molecule

2. Which subatomic particle is negatively charged?

• A. Electron

• B. Neutron

• C. Positron

• D. Proton

3. How do we call the protons and neutrons that are found together in the nucleus?

• A. Nuclei

• B. Nucleons

• C. Atomic mass

• D. Mass number

4. How many protons are there in the atom?

• A. 3

• B. 4

• C. 5

• D. 6

5. Which subatomic particles can be found in the nucleus of an atom?

 

• A. Neutrons only

• B. Protons only

• C. Protons and electrons

• D. Protons and neutrons

6. 6. Which subatomic particle has no charge?

• A. Electron

• B. Neutron

• C. Positron

• D. Proton

7.    Which two particles would be attracted to each other?

• A. Protons and neutrons

• 7. B. Protons and electrons

• C. Electrons and neutrons

• D. All particles are attracted to each other.

8. 8. Which particles have approximately the same size and mass?

• A. Protons and neutrons

• B. Electrons and protons

• C. Neutrons and electrons

• D. None because all are different in terms of size and mass.

What do you call the pointed structure (orange circle)?

• A. Electron

• B. Moron

• C. Neutron

• D. Proton

7. 10. An atom of an element is electrically neutral because the number of protons is equal to the number of _______________.

• A. Electrons

• B. Neutrons

• C. Nucleons

• D. Nucleus