Final answer:
Anna mistakenly stated that ionic compounds have low boiling points; however, they have high melting and boiling points because the strong ionic bonds require substantial energy to be broken.
Step-by-step explanation:
Anna's error is in stating that ionic compounds have low boiling points, when in fact they typically have both high melting points and high boiling points.
The high melting and boiling points of ionic compounds indicate that a significant amount of energy is required to break the strong electrostatic forces, known as ionic bonds, between the oppositely charged ions in the compound.
For instance, sodium chloride (table salt) has a high melting point of 801°C and an even higher boiling point of 1413°C.
Therefore, it can be concluded that ionic compounds indeed have strong bonds due to the significant energy required to break them.