Hydroxide and Ammonium Ions

The video tutorial explains how to write the formula for ammonium hydroxide. It begins by introducing ammonium as a polyatomic ion, NH4+, with a positive charge. The tutorial then covers the hydroxide ion, OH-, with a negative charge. By combining these ions, the formula for ammonium hydroxide, NH4OH, is derived, ensuring a net charge of zero. The video emphasizes memorizing these ions for better understanding.

What is ammonium classified as?

• An alkali metal

• A transition metal

• A polyatomic ion

• A noble gas

Which of the following is true about the ammonium ion?

• It is a single element

• It is found on the periodic table

• It has a negative charge

• It has a positive charge

What is the chemical formula for the ammonium ion?

• NH2-

• NH4+

• NH3

• NH4-

Where can you find the hydroxide ion?

• In the alkali metals

• On the periodic table

• In the noble gases

• In a table of polyatomic ions

What is the charge of the hydroxide ion?

• Negative

• Neutral

• Positive

• Variable

What is the chemical formula for the hydroxide ion?

• HO2-

• OH+

• O2H

• OH-

What happens when ammonium and hydroxide ions combine?

• They form a compound with a net positive charge

• They form a compound with a net negative charge

• They form a compound with a net charge of zero

• They do not react

What is the correct formula for ammonium hydroxide?

• NH3O

• NH3OH

• NH4OH

• NH4O