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- 1. Multiple Choice
Which subatomic particle has a negative charge?
Proton
Neutron
Electron
Nucleus
- 2. Multiple Choice
What is the primary role of electrons in an atom?
Determine the atom's mass
Balance the charge of protons
Form chemical bonds
Stabilize the nucleus
- 3. Multiple Choice
Which subatomic particle is responsible for the chemical properties of an element?
Proton
Neutron
Electron
Nucleus
- 4. Multiple Choice
What are the fundamental building blocks of matter?
Molecules
Atoms
Cells
Compounds
- 5. Multiple Choice
Who first proposed the concept of atoms?
Ancient Roman philosophers
Ancient Greek philosophers
Ancient Egyptian philosophers
Ancient Chinese philosophers
- 6. Multiple Choice
Dalton's Atomic Theory suggests that atoms of a given element are identical in which aspect?
Shape
Mass
Color
Volume
- 7. Multiple Choice
What is the main feature of Bohr's Model regarding electron movement?
Electrons move randomly
Electrons orbit in fixed energy levels
Electrons are stationary
Electrons move in a straight line
- 8. Multiple Choice
What happens when electrons jump between energy levels in Bohr's Model?
They change color
They emit or absorb energy
They become protons
They disappear
- 9. Multiple Choice
Where are protons and neutrons located in an atom?
In the nucleus
Orbiting the nucleus
In the electron cloud
Outside the atom
- 10. Multiple Choice
Which of the following is NOT a main particle of an atom?
Proton
Neutron
Electron
Photon
- 11. Multiple Choice
Which subatomic particle is neutral in charge?
Proton
Electron
Neutron
Positron
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