Solids, Liquids, and Gases: Solids

The video tutorial explains the properties of solids, focusing on their definite shape and volume due to tightly packed particles. It distinguishes between crystalline solids, which have a regular particle pattern, and amorphous solids, which lack this structure. Examples of crystalline solids include table salt and snowflakes, while amorphous solids include tar and glass. The video concludes with a transition to the topic of liquids.

What characteristic of solids is due to the arrangement of their particles?

• They can flow easily.

• They have a definite shape and volume.

• They are always transparent.

• They can be compressed easily.

What is a defining feature of crystalline solids?

• They have a random particle arrangement.

• They have a regular, repeating pattern of particles.

• They are always soft.

• They can change shape over time.

Which of the following is an example of a crystalline solid?

• Table salt

• Candle wax

• Tar

• Glass

What is a characteristic of amorphous solids?

• They are always transparent.

• They have a regular crystal structure.

• They are always liquid at room temperature.

• They can change shape over time.

Which of the following is considered an amorphous solid?

• Amethyst

• Table salt

• Snowflake

• Window glass