What is the smallest unit of matter?

• Atom

• Molecule

• Cell

• Electron

What are negatively charged particles orbiting an atom's nucleus called?

• Protons

• Neutrons

• Electrons

• Positrons

What are neutral particles in an atom's nucleus called?

• Protons

• Electrons

• Neutrons

• Positrons

What is the model of an atom with electrons around the nucleus called?

• Bohr-model

• Rutherford-model

• Thomson-model

• Quantum-mechanical model

What is the material where electrons don't move easily called?

• Insulator

• Conductor

• Semiconductor

• Superconductor

What is the material where electrons move easily called?

• Conductor

• Insulator

• Semiconductor

• Resistor

What is a path connecting points with a charge difference, so electrons move, called?

• Electrical circuit

• Magnetic field

• Insulator

• Resistor

What is a material with tightly bound electrons, an insulator?

• Plastic

• Human Body

• Brass

• Copper

What is the movement of electrons through a conductor in an electrical circuit called?

• Electron Flow

• Proton Flow

• Neutron Drift

• Photon Movement

What is an atom's central core, containing protons and neutrons, called?

• Atomic Nucleus

• Electron Cloud

• Molecular Bond

• Chemical Element