Liquids and Solids

Liquids and Solids

List the properties of gases

Liquids

• Liquids can also be described by the kinetic molecular theory.

• They have constantly moving particles that slide past one another

• This explains why gases and liquids are both fluids

Multiple Choice

Do you think a gas or a liquid has more attractive forces between particles?

• Liquid

• Gas

Open Ended

Most liquids flow downhill. Quickly reasearch and answer with a liquid that flows uphill.

Liquids

• Intermolecular forces like dipole-dipole london dispersion, and hydrogen bonding account for the properties of a liquid.

• These are why some liquids are denser than others.

Open Ended

Most fluids are less dense as liquids than solids. What are some liquids that are more dense than their solid counterparts? Quickly research and answer. ( something other than water)

Open Ended

Why does a gas have more ability to compress?

Liquids

• Liquids can be compressed by about 4% of there volume when under 1000 atm of pressure, similar to a solid

• Gases under the same pressure can compress to about 1/1000th their size

• Like gases, liquids can diffuse (mix particles). Diffusion occurs becuase of random motion of particles.

Multiple Choice

Does diffusion happen faster at higher or lower temperatures?

• higher

• lower

Properties of Liquids

• Surface tension- a force that tends to pull adjacent parts of a liquid's surface together, thereby decreasing surface area to the smallest possible size.

• Capillary action- attraction of the surface of a liquid to the surface of a sold

Open Ended

What is the liquid the lowest surface tension and why does it have the lowest surface tension?

Changes of state

• Vaporization- proces by which a liquid or solid changes to a gas

• Evaporation- process by which particles excape form the surface of a nonboiling liquid

• Boiliing

• Freezing- physical change of a liquid to a solid

Open Ended

What happens to the energy in a liquid to change into a solid?