Chemical Nomenclature and Ionic Compounds

The video tutorial explains how to write the chemical formula for nickel sulfide. It begins by identifying the element symbols for nickel and sulfur, noting that the compound is ionic due to the metal and non-metal combination. The tutorial discusses the charges of nickel and sulfur, emphasizing the need for the charges to balance to zero. The final formula for nickel sulfide is NiS. The video also touches on naming conventions, explaining the difference between 'ide' and 'ite' suffixes in chemical nomenclature.

What is the symbol for nickel when writing the formula for nickel(II) sulfide?

• Ni

• N

• Nk

• Nl

Which type of compound is formed between a metal and a non-metal?

• Metallic

• Ionic

• Molecular

• Covalent

What is the ionic charge of nickel in nickel(II) sulfide?

• 2+

• 2-

• 1+

• 1-

What is the charge of sulfur when it forms an ion?

• 2+

• 1-

• 1+

• 2-

What does the suffix '-ide' indicate in chemical nomenclature?

• A polyatomic ion

• A single element

• An acid

• A base