Differentiating Nitrate, Nitrite, and Nitride

What is a common mistake when identifying nitrate, nitrite, and nitride?

• Mixing up their chemical formulas

• Confusing their names due to similar spelling

• Forgetting their ionic charges

• Misidentifying them as organic compounds

What is the formula for nitrate?

• NO2-

• N3-

• NH3

• NO3-

Which of the following is a polyatomic ion?

• N2

• N3-

• NO3-

• Na+

Which ion is monoatomic?

• Nitrate

• Nitrite

• Nitride

• Hydroxide

What is the charge on the nitride ion?

• 2-

• 3-

• 1+

• 1-

What defines a polyatomic ion?

• An ion with a single atom

• An ion with two atoms

• An ion without any charge

• An ion with more than one atom

Why are hydroxide and cyanide exceptions to the IDE rule?

• They are monoatomic ions

• They do not form ions

• They are metallic ions

• They are polyatomic ions

Why do we use brackets around polyatomic ions in formulas?

• To indicate charge

• To show they are gases

• To group the atoms together

• To highlight their reactivity

How many calcium ions are needed to balance the charge with nitrate?

• Four

• Three

• Two

• One

What is the correct formula for calcium nitride?

• Ca2N3

• CaN

• CaN3

• Ca3N2