Question

chemical bonds and fundamental forces:
the strength of electrical forces between particles affects the substances’ structure and properties. these
forces cause atoms, which consist of protons, neutrons, and electrons, to form bonds and create
compounds like salt and water. for example, salt has a high melting point because of the strong attraction
between its ions. water’s unique properties are due to the forces between its molecules.
how do electrical forces between particles affect the properties of substances?
○ they increase the weight of the substances.
○ they change the color of the substances.
○ they determine the melting and boiling points
○ they make the substances magnetic.

Explanation:

The passage states that electrical forces affect substances' structure and properties, with examples like salt's high melting point (due to strong ion attraction) and water's unique properties (due to forces between molecules). Weight, color, and magnetism aren't mentioned as effects of these forces. The option "They determine the melting and boiling points" aligns with the examples (melting point of salt, properties of water related to molecular forces).

Answer:

C. They determine the melting and boiling points