Basic Concepts of Atoms and Electrons

What composes all matter whether a liquid, solid, or gas?

• Atoms

• Electrons

• Protons

• Neutrons

Which of the following is not a basic part of an atom?

• Electron

• Proton

• Neutron

• Coulomb

What is the smallest element of a matter?

• atom

• molecule

• crystal

• wafer

To determine whether a material can support the flow of electricity or not, we need to examine its

• atomic structure

• physical state

• molecular structure

• chemical composition

Approximate diameter of an atom

• 10-10 µµm

• 10-10 µm

• 10-10 mm

• 10-10 m

The lightest kind of atom or element

• Helium

• Oxygen

• Hydrogen

• Titanium

Known as the simplest type of atom.

• Hydrogen

• Oxygen

• Helium

• Nitrogen

Approximate diameter of a Hydrogen atom

• 1.1 x 10-10 µµm

• 1.1 x 10-10 µm

• 1.1 x 10-10 mm

• 1.1 x 10-10 m

A commonly used model in predicting the atomic structure of a material.

• String model

• Wave model

• Particle model

• Bohr model

Is at the center of an atomic structure in a Bohr model.

• electrons

• protons

• neutrons

• nucleus