Subatomic Particles and Their Properties

In this video, Josh introduces subatomic particles, focusing on protons, neutrons, and electrons. He explains their locations, charges, and masses. The video covers atomic and mass numbers, showing how to use these to describe elements and calculate the number of neutrons. The concept of isotopes is introduced, explaining why atomic weights are not whole numbers. The video concludes with a summary of key points.

What are the three subatomic particles discussed in the video?

• Atoms, Molecules, and Compounds

• Protons, Neutrons, and Electrons

• Ions, Isotopes, and Elements

• Nuclei, Electrons, and Photons

Where are protons and neutrons located within an atom?

• In the atomic shell

• In the nucleus

• Orbiting the nucleus

• In the electron cloud

What is the charge of a neutron?

• Negative

• Neutral

• Variable

• Positive

Which subatomic particle is responsible for the unique identity of an element?

• Neutron

• Nucleus

• Electron

• Proton

How is the atomic number of an element defined?

• Total mass of the atom

• Number of protons in the nucleus

• Number of electrons in the outer shell

• Number of neutrons in the nucleus

What does the mass number of an atom represent?

• The total number of protons and neutrons

• The total number of protons and electrons

• The total number of electrons

• The total number of neutrons and electrons

How can you calculate the number of neutrons in an atom?

• Subtract the atomic number from the mass number

• Add the atomic number to the mass number

• Multiply the atomic number by the mass number

• Divide the mass number by the atomic number

What are isotopes?

• Atoms with the same number of protons but different numbers of neutrons

• Atoms with the same number of neutrons but different numbers of protons

• Atoms with the same number of electrons but different numbers of protons

• Atoms with the same atomic number but different atomic weights

What is the mass of an electron in atomic mass units (amu)?

• 0.5 amu

• 2 amu

• 1 amu

• 0 amu

Which statement is true about the charge of a proton?

• It has no charge

• It has a negative charge

• It has a positive charge

• It has a variable charge