Question

Which type of molecular motion best characterizes liquids?

O vibration and some linear motion like sliding around
O very little molecular motion at all
O vibration alone
rapid random movement in straight lines alone

Help please 20 points

Answer 1

Answer: The type of molecular motion that best characterizes liquids is rapid random movement in straight lines alone.

Explanation: In liquids, molecules are in constant motion and move around randomly. They move in straight lines until they collide with other molecules or the walls of their container. This motion is called Brownian motion.

Brownian motion is named after the botanist Robert Brown who observed the random movement of pollen grains in water under a microscope in 1827. The movement was caused by the water molecules colliding with the pollen grains and pushing them around.

Liquids have a definite volume but no definite shape. They can flow and take the shape of their container because their molecules are free to move around. Some examples of liquids include water, milk, oil, and gasoline.

Some properties of liquids include:

They have a definite volume but no definite shape

They can flow and take the shape of their container

They are relatively incompressible

They have a lower density than solids

They have a higher density than gases

Hope this helps, and have a great day!

Answer 2

It would be this “vibration and some linear motion like sliding around”. And I know this because gas moves freely, but a solid does’t have enough room so it moves very little.