Ionic Compounds and Element Charges

The video tutorial explains how to write the chemical formula for potassium chloride (KCl). It begins by identifying potassium and chlorine on the periodic table, noting their element symbols as K and Cl, respectively. The tutorial then discusses the importance of balancing charges in ionic compounds, highlighting that potassium has a +1 charge and chlorine has a -1 charge. These charges cancel each other out, resulting in a net charge of zero, which confirms KCl as the correct formula for potassium chloride.

What is the element symbol for potassium?

• K

• P

• Pt

• Po

Why is it important to balance charges in ionic compounds?

• To make the compound colorful

• To make the compound dissolve in water

• To ensure the compound is stable

• To increase the compound's weight

What charge does potassium have in the periodic table?

• +1

• -1

• 0

• +2

Which group is chlorine in, and what is its charge?

• Group 2, +2 charge

• Group 17, -1 charge

• Group 1, +1 charge

• Group 16, -2 charge

What is the net charge of potassium chloride (KCl)?

• -1

• +1

• +2

• 0