properties of ionic compounds

what holds the oppositely charged ions in ionic compounds together?

Strong electrostatic forces of attraction, known as ionic bonds

How are ions arranged in ionic compounds?

They are arranged in a giant lattice structure with a regular pattern, forming crystals.

Why do ionic compounds have high melting and boiling points?

Because the electrostatic forces of attraction between ions are strong, requiring a lot of energy to overcome and separate the ions

Why do ionic compounds need to be heated to high temperatures before they melt?

Due to the strong electrostatic forces between ions, a lot of energy is needed to overcome these forces to cause the substance to change state.

How do highly charged ions affect the melting points of ionic compounds?

Highly charged ions (like Mg2+ or O2- attract other ions more strongly, requiring more energy to overcome the forces and resulting in higher melting points

When do ionic compounds conduct electricity?

Ionic compounds conduct electricity when they are molten or dissolved in water.

Why do ionic compounds not conduct electricity in the solid state?

In the solid state, the ions are not free to move, so they cannot carry the electric current

What are the two conditions needed for a substance to conduct electricity?

• It must contain charged particles.

• These charged particles must be free to move

How do ions carry the current when an ionic compound conducts electricity?

The charged ions move and carry the electric current.

Why do ionic compounds conduct electricity when molten or in aqueous solution?

Because the ions are free to move in these states, allowing them to carry the electric current.

What are the negative ions in ionic compounds called, and where do they move?

Negative ions are called anions, and they are attracted to the positive electrode (anode)

What are the positive ions in ionic compounds called, and where do they move?

Positive ions are called cations, and they are attracted to the negative electrode (cathode)