Understanding Ions and Atoms

The video tutorial explains the differences between atoms and ions. It defines an atom as the smallest indivisible unit of matter and an ion as an atom or molecule with a net electrical charge. Examples of atoms and ions are provided, along with a discussion on the number of electrons and protons in each. The video also covers the electrical charge of atoms and ions, their attraction to electrical fields, and their existence and stability.

What is the primary difference between an atom and an ion?

• An atom is charged, while an ion is neutral.

• An atom is the smallest unit of matter, while an ion has a net electrical charge.

• An atom is larger than an ion.

• An atom is a molecule, while an ion is a single element.

Which of the following is an example of an ion?

• SO

• NH4+

• K

• Mg

How do the numbers of electrons and protons compare in an atom?

• Atoms have equal numbers of electrons and protons.

• Atoms have no electrons.

• Atoms have more protons than electrons.

• Atoms have more electrons than protons.

What charge does an ion typically have?

• Always negative

• Neutral

• Either positive or negative

• Always positive

How do atoms behave in an electrical field?

• They become charged in the field.

• They are not affected by the field.

• They are repelled by the field.

• They are attracted to the field.

Which statement is true about the stability of ions?

• Ions are only stable in pairs.

• Ions are stable and can exist independently.

• Ions cannot exist independently.

• Ions are unstable.