Ionic and Molecular Compounds Concepts

The video tutorial covers Chapter 7, Section 1, focusing on chemical names and formulas. It explains the importance of systematic naming for understanding chemical compositions. The video differentiates between molecular and ionic compounds, illustrating with examples like water, octane, and aluminum sulfate. It introduces monatomic ions, discussing how elements gain or lose electrons to achieve stability. The tutorial also covers naming conventions for ions, including handling ambiguous cases in the D Block, such as iron's multiple oxidation states.

Why are common names like 'water' and 'salt' insufficient for chemists?

• They do not provide information about chemical makeup.

• They are difficult to pronounce.

• They are too long to remember.

• They are not used internationally.

What does the chemical formula of a molecular compound represent?

• The color of the compound.

• The total weight of the compound.

• The number of molecules in a sample.

• The number of atoms of each element in a molecule.

How is the formula unit of an ionic compound determined?

• By measuring the weight of the compound.

• By listing all atoms in the compound.

• By counting the number of molecules.

• By finding the simplest ratio of cations to anions.

What is a monatomic ion?

• An ion made from multiple atoms.

• An ion that has no charge.

• An ion made from a single atom.

• An ion that is always positively charged.

Why do atoms form ions to achieve a noble gas configuration?

• To become heavier.

• To increase their size.

• To become more stable.

• To change color.

How does lithium achieve a stable noble gas configuration?

• By losing two electrons.

• By gaining one electron.

• By losing one electron.

• By gaining two electrons.

Which group of elements is difficult to ionize due to having four valence electrons?

• Group 18

• Group 14

• Group 1

• Group 17

What suffix is used for naming anions?

• -ous

• -ite

• -ate

• -ide

How is the charge of an ion indicated in the name of a compound?

• By using a prefix.

• By using a color code.

• By using a suffix.

• By using a Roman numeral.

What is the name of the ion Fe2+?

• Iron(V)

• Iron(II)

• Iron(III)

• Iron(IV)