Atoms Unplugged: Tiny Particles, Big Questions

Atoms Unplugged: Tiny Particles, Big Questions

Test your knowledge on the wonders of the atom! Select your answer to see if you're right. Unlock the mysteries of the atom with this interactive quiz designed for curious minds and science enthusiasts. From the pioneers of atomic theory to the behavior of subatomic particles, these 30 thought-provoking questions will test and expand your understanding of atomic structure. Perfect for students, teachers, and self-learners alike, this engaging challenge blends core chemistry concepts with a fun quiz format. Explore the building blocks of matter, check your answers instantly, and see how deep your knowledge truly runs. Your total score will be shown at the bottom!

1. Who proposed the first atomic theory?

Aristotle

Democritus

Dalton

Bohr

2. Which subatomic particle has a negative charge?

Proton

Electron

Neutron

Photon

3. The nucleus of an atom contains:

Only protons

Only neutrons

Protons and electrons

Protons and neutrons

4. What is the relative mass of a proton?

0

1

2

0.0005

5. Electrons are found:

Inside the nucleus

Orbiting the nucleus

Between protons

In neutron clouds

6. Which model is known as the 'plum pudding model'?

Bohr Model

Dalton's Model

Thomson's Model

Rutherford's Model

7. Atomic number represents the number of:

Neutrons

Protons

Electrons

Protons and Neutrons

8. Which particle determines the chemical properties of an atom?

Neutron

Proton

Electron

Nucleus

9. Isotopes differ in the number of:

Protons

Electrons

Neutrons

Nuclei

10. Who discovered the neutron?

Rutherford

Bohr

Chadwick

Thomson

11. Which of the following is electrically neutral?

Proton

Electron

Neutron

Ion

12. The mass number is the sum of:

Electrons and neutrons

Protons and neutrons

Protons and electrons

Only neutrons

13. The gold foil experiment was conducted by:

Bohr

Chadwick

Rutherford

Thomson

14. Which model introduced energy levels?

Bohr Model

Rutherford Model

Thomson Model

Dalton Model

15. Which of these is not a subatomic particle?

Proton

Electron

Neutron

Isotope

16. What is the charge of a proton?

+1

0

-1

+2

17. What keeps the nucleus stable?

Electrons

Strong nuclear force

Gravity

Magnetic force

18. Who gave the planetary model of the atom?

Dalton

Bohr

Rutherford

Chadwick

19. Which particle orbits the nucleus?

Neutron

Electron

Proton

Alpha particle

20. What happens to electrons in an ion?

Protons are added

Neutrons are removed

Electrons are gained or lost

Electrons stay the same

21. Which of these is smallest?

Atom

Electron

Nucleus

Proton

22. The atomic mass is mostly due to:

Protons

Electrons

Nucleus

Neutrons

23. Which of the following has the same number of protons but different mass?

Isotopes

Ions

Compounds

Electrons

24. Who discovered the electron?

Dalton

Bohr

Thomson

Rutherford

25. Which particle contributes most to the chemical bonding?

Neutron

Electron

Proton

Nucleus

26. Which element has atomic number 1?

Oxygen

Hydrogen

Helium

Lithium

27. What is an ion?

An atom with a nucleus

An atom with charge

An atom without neutrons

An unstable atom

28. What are orbitals?

Paths of protons

Electrons around neutrons

Regions where electrons are likely found

Neutron paths

29. Which part of an atom is mostly empty space?

Electron cloud

Nucleus

Neutron

Proton

30. Bohr's model failed because:

It included neutrons

Only worked for hydrogen

It lacked orbits

It ignored electrons