The video tutorial by Mr. Millings covers the basics of atomic structure, focusing on the nucleus and subatomic particles like protons, neutrons, and electrons. It explains the concept of atomic mass and charge, highlighting that the nucleus contains most of the atom's mass and is positively charged, while the electron cloud is negatively charged. The tutorial also introduces the atomic mass unit (AMU) and its relation to the carbon-12 atom. The video concludes with a table summarizing the properties of subatomic particles.

What determines the type of element an atom is?

• Size of the nucleus

• Number of protons

• Number of electrons

• Number of neutrons

What is the primary composition of an atom's nucleus?

• Electrons and protons

• Protons and neutrons

• Neutrons and electrons

• Protons, neutrons, and electrons

How does the mass of electrons compare to protons and neutrons?

• Electrons are heavier

• Electrons have the same mass

• Electrons are lighter

• Electrons have no mass

What is the charge of a neutron?

• Variable

• Negative

• Positive

• Neutral

Which subatomic particle is located in the electron cloud?

• Electron

• Nucleus

• Neutron

• Proton

What is the charge of an electron?

• Negative

• Neutral

• No charge

• Positive

Tags

NGSS.MS-PS2-3

What does AMU stand for?

• Atomic Measurement Utility

• Atomic Mass Utility

• Atomic Measurement Unit

• Atomic Mass Unit

Tags

NGSS.MS-PS1-5

What is the mass of one AMU equivalent to?

• 1/12th the mass of an oxygen atom

• 1/12th the mass of a nitrogen atom

• 1/12th the mass of a carbon-12 atom

• 1/12th the mass of a lithium atom

What happens to an atom when it gains or loses electrons?

• It becomes a neutron

• It becomes an isotope

• It remains neutral

• It becomes an ion

What is the overall charge of a stable atom?

• Variable

• Neutral

• Negative

• Positive