Ions and Electron Transfer

Which of the following statements best describes a cation?

• A neutral atom with an equal number of protons and electrons.

• An atom that has gained electrons and has a negative charge.

• An atom that has lost electrons and has a positive charge.

• An atom that has gained protons and has a positive charge.

Tags

NGSS.MS-PS2-3

What happens to the charge of an atom when it gains electrons?

• It becomes positively charged.

• It becomes negatively charged.

• It remains neutral.

• It becomes a cation.

Which of the following elements is most likely to form a cation?

• Chlorine (Cl)

• Oxygen (O)

• Sodium (Na)

• Sulfur (S)

Tags

NGSS.HS-PS1-1

If an atom has 11 protons and 10 electrons, what is the charge of the ion?

• +1

• -1

• 0

• +2

Which of the following ions is an anion?

How does the periodic table help predict the formation of ions?

• It shows the number of neutrons in an atom.

• It indicates the atomic mass of elements.

• It helps determine whether an atom will gain or lose electrons.

• It lists the isotopes of each element.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following best describes an anion?

• An atom that has lost protons.

• An atom that has gained electrons.

• An atom that has lost electrons.

• An atom that has gained protons.

What is the charge of an ion formed when an atom loses two electrons?

• -2

• +2

• -1

• +1

Which of the following elements is most likely to form an anion?

• Magnesium (Mg)

• Fluorine (F)

• Aluminum (Al)

• Potassium (K)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the primary factor that determines whether an atom will form a cation or an anion?

• The number of neutrons in the nucleus.

• The number of protons in the nucleus.

• The number of electrons in the outer shell.

• The atomic mass of the element.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2