Atomic Structure and Subatomic Particles

This video introduces the first unit of chemistry, focusing on the structure of an atom. It covers essential vocabulary, including subatomic particles like protons, neutrons, and electrons, and explains their mass, charge, and location. The video emphasizes the Bohr model for visualizing atoms and provides a learning target to describe atom structure. It also explains atomic mass units and the concept of electrical charge, highlighting the importance of understanding these concepts for future lessons.

What is the main focus of the first unit in this chemistry course?

• Chemical reactions

• Organic chemistry

• The periodic table

• The structure of an atom

Which of the following is NOT a key vocabulary term in this lesson?

• Electron cloud

• Subatomic particles

• Bohr model

• Chemical bonds

Which subatomic particle is found in the nucleus and has a positive charge?

• Electron

• Neutron

• Photon

• Proton

Which model is preferred for understanding atomic structure in this lesson?

• Nuclear model

• Bohr model

• Quantum model

• Rutherford model

What is the mass of a neutron in atomic mass units (amu)?

• 2 amu

• 0.00054 amu

• 1 amu

• 0 amu

Which subatomic particle has a negative charge?

• Nucleus

• Proton

• Neutron

• Electron

What is the charge of a neutron?

• Variable

• Positive

• Negative

• Neutral

What is the approximate mass of an electron in atomic mass units?

• 0.00054 amu

• 2 amu

• 0.5 amu

• 1 amu

Where are electrons located in an atom?

• In the electron cloud

• In the nucleus

• In the neutron field

• In the proton shell

Which subatomic particles are located in the nucleus?

• Electrons and protons

• Protons and neutrons

• Protons and photons

• Neutrons and electrons