The Liquid State
In a liquid, particles stay close enough to nearly touch but can slide past each other, giving a fixed volume that takes the shape of its container; intermolecular forces produce viscosity and surface tension, both real measurable properties.
What keeps a fixed volume but changes its shape Particles close together, sliding past each other How does a river bend around every rock Weaker forces than a solid, stronger than a gas What pulls a water droplet into a perfect bead Surface tension, molecules pulling inward at the edge How does a water strider walk across a pond The same surface tension, holding up its weight Why does a spoon drag slow through honey Viscosity, thick liquids drag against themselves What happens to the fastest particles at the surface They escape as vapor, evaporation happening always Why does a liquid barely compress under pressure Liquids pack tight, particles already touching What shape does water take inside a bottle The bottle's shape, the liquid settles in Which state sits between a rigid solid and a free gas Liquid, particles mobile, volume staying constant
Key Concepts: Liquid particles stay close together (nearly touching, hence low compressibility) but can slide past each other | Intermolecular forces produce real, measurable surface tension (water striders, droplet beading) and viscosity (resistance to flow) | Fixed volume, but shape conforms to the container | Evaporation is the fastest particles at the surface escaping as vapor | Companion to "I'm LiQuo"
Key Words: intermolecular forces, surface tension, viscosity, compressibility, evaporation