Ions and Their Charges

The video tutorial explains the concept of ions, focusing on monoatomic and polyatomic ions. It describes how ions form by gaining or losing electrons, leading to positive or negative charges. The tutorial covers specific examples, including the breakdown of water into hydrogen and hydroxide ions, and details the composition and charge of sulfate, sulfide, carbonate, hydrogen carbonate, and ammonium ions. The video aims to provide a comprehensive understanding of ion formation and characteristics, emphasizing the stability and charge of different ion types.

What happens to an atom when it loses an electron?

• It becomes negatively charged.

• It becomes a polyatomic ion.

• It becomes positively charged.

• It remains neutral.

What is a polyatomic ion?

• An ion that cannot gain or lose electrons.

• An ion with no charge.

• An ion made of a single atom.

• An ion made of multiple atoms.

Which of the following ions is formed when water breaks down?

• Carbonate ion

• Ammonium ion

• Hydroxide ion

• Sulfate ion

How many oxygen atoms are present in a sulfate ion?

• Two

• Three

• Four

• Five

What is the charge on a sulfide ion?

• +2

• -1

• -2

• +1

What additional atom is present in a hydrogen carbonate ion compared to a carbonate ion?

• Sulfur

• Hydrogen

• Nitrogen

• Oxygen

What is the total charge on a carbonate ion?

• +2

• +1

• -2

• -1

Which of the following ions is positively charged?

• Hydroxide ion

• Sulfate ion

• Ammonium ion

• Carbonate ion

How many hydrogen atoms are present in an ammonium ion?

• Two

• Three

• One

• Four

What is the chemical formula for an ammonium ion?

• NH3+

• NH4+

• NH2+

• NH5+