Exploring Atomic Structure and Subatomic Particles

This video provides a basic overview of atomic structure, focusing on atoms as the fundamental units of chemical elements. It explains the roles of subatomic particles—protons, neutrons, and electrons—and their charges. The video also covers electron shells and energy levels, using elements like carbon, helium, hydrogen, neon, and oxygen to illustrate concepts of stability and chemical reactivity. The octet rule is introduced, highlighting how atoms achieve stability by sharing, gaining, or losing electrons.

What are atoms primarily composed of?

• Molecules

• Compounds

• Subatomic particles

• Ions

Where are electrons located in an atom?

• In the electron cloud

• In the nucleus

• In the neutron field

• In the proton cloud

What charge do neutrons carry?

• Positive

• Variable

• Negative

• Neutral

Which statement is correct about the atomic structure?

• Atoms are electrically neutral because they have equal numbers of protons and electrons

• Neutrons and electrons are found in the nucleus

• All atoms naturally seek to lose electrons

• Protons and electrons carry the same charge

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NGSS.MS-PS1-1

How many electrons does carbon typically have in its nucleus?

• 12

• 0

• 6

• 18

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NGSS.MS-PS1-1

What is required for an atom with one energy level to be stable?

• 8 electrons

• 4 electrons

• 2 electrons

• 1 electron

What is true about helium in terms of its electron configuration?

• It seeks to lose electrons

• It has 2 electrons and is stable

• It has 8 electrons

• It is reactive

Which element is chemically reactive due to having only one electron in its shell?

• Hydrogen

• Helium

• Neon

• Oxygen

Which element is stable with 8 electrons in its outermost shell?

• Oxygen

• Neon

• Hydrogen

• Carbon

What does the octet rule state about atoms?

• All atoms have 8 electrons

• Atoms need at least one electron to be stable

• Atoms need 8 electrons in any shell to be stable

• Atoms with fewer than 8 electrons in their outermost shell seek stability