Ionic Compounds and Their Properties

The video tutorial explains how to predict ionic charges using the periodic table. It uses lithium and chlorine as examples to demonstrate how elements form ions by losing or gaining electrons, resulting in positive or negative charges. The tutorial also covers naming conventions for ions, particularly for group seven elements, and discusses elements with variable ionic charges, such as iron and copper. Additionally, it introduces molecular and polyatomic ions, providing examples like ammonium and sulfate ions.

What happens to a lithium atom when it forms an ion?

• It gains an electron.

• It loses an electron.

• It gains a proton.

• It loses a proton.

Which group in the periodic table forms ions with a charge of plus two?

• Group three

• Group four

• Group two

• Group one

What charge does a chlorine ion have after gaining an electron?

• Minus two

• Minus one

• Plus two

• Plus one

What is the charge of an ion formed by an element in group six?

• Minus one

• Minus two

• Plus one

• Plus two

How does the name of a bromine atom change when it forms an ion?

• Bromium ion

• Bromide ion

• Bromine ion

• Bromate ion

What does the Roman numeral in 'Iron (III)' indicate?

• The atomic number

• The ionic charge

• The number of electrons

• The number of protons

Which of the following ions can have multiple charges?

• Sodium

• Chlorine

• Iron

• Lithium

What is the charge of a sulfate ion?

• Minus two

• Plus one

• Plus two

• Minus one

Which of the following is a polyatomic ion?

• Sodium

• Lithium

• Chloride

• Ammonium

What is the composition of a carbonate ion?

• Two carbons, three oxygens

• One carbon, three oxygens

• One carbon, two oxygens

• Two carbons, four oxygens