Question

1. choose the best answer.

why do compounds form?
because the electrostatic attraction between protons and electrons pull them together
so that atoms can fill their valence layer and be stable
so that atoms can achieve a lower energy state
all of these

1. choose the best answer.

which matter has the weakest intermolecular force?
liquid
solid
gas
all of these

Explanation:

4)

• Compounds form due to electrostatic attractions (ionic bonds involve attraction between ions, which are related to protons and electrons in a way). Atoms form compounds to fill their valence shells (octet rule for many atoms) and achieve stability. Also, forming compounds often leads to a lower energy state (more stable configuration). So all the given reasons are valid.

• In solids, intermolecular forces are strong, holding the particles in a fixed - position (rigid structure). In liquids, intermolecular forces are weaker than in solids but still strong enough to keep the liquid together (definite volume but no definite shape). In gases, the intermolecular forces are the weakest as gas particles move freely and have high kinetic energy, with large distances between them.

Answer:

all of these

5)