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Atomic Structure Exploration

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Atomic Structure Exploration

📚 Part 1: Multiple Choice

1. Which subatomic particle has a positive charge?

Electron

Proton

Neutron

Nucleus

2. Where are electrons found in an atom?

In the nucleus

In shells around the nucleus

Mixed with protons

Only in isotopes

3. What determines the atomic number of an element?

Number of neutrons

Number of electrons

Number of protons

Total mass of the atom

4. Which of the following are found in the nucleus? (Select all that apply)

Protons

Neutrons

Electrons

Electron shells

✏️ Part 2: Short Answer Questions

5. Define what an isotope is and explain how isotopes of the same element differ from each other.
6. A carbon atom has 6 protons and 8 neutrons. Calculate:

a) Atomic number: __________

b) Mass number: __________

c) Number of electrons (in a neutral atom): __________

7. Complete the following table for these atoms:
8. Explain why atoms are electrically neutral, even though they contain charged particles.

🎨 Part 3: Diagram Activities

9. Draw and label a simple atomic model showing the nucleus, electron shells, protons, neutrons, and electrons. Use the space below:
10. Label the parts of this atomic structure diagram:

A: _________________ (centre of atom)

B: _________________ (positive particles)

C: _________________ (neutral particles)

D: _________________ (negative particles)

E: _________________ (paths of electrons)

11. Compare the Bohr model and the electron cloud model of the atom. Write one key difference:

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