Plastic is an example of a(n)

1. amorphous solid
2. high viscosity liquid
3. crystalline solid
4. fluid

3. crystalline solid

The measure of the AVERAGE energy of motion of particles in matter is known as

The measure of the AVERAGE energy of motion of particles in matter is known as temperature.

To separate a mixture of paper clips and sand, Joe should use

1. magnetic separation
2. distillation
3. decanting
4. wind separation

3. decanting

Which of the following is NOT true?

1. Particles move differently depending on state.
2. Particles have the same amount of energy in different states.
3. Energy must be added or removed to change state.
4. Particles have different amounts of energy in different states.

2. Particles have the same amount of energy in different states.

To change a gas to a liquid, you need to ________ the amount of energy.

1. keep the same
2. decrease
3. hydrolyze
4. increase

2. decrease

To determine the correct answer, we need to understand the properties of plastic. Here's how we can go about it:

Plastic is a synthetic material that can be easily shaped and molded when heated. It is a type of polymer, which is a large molecule made up of repeating subunits called monomers.

1. Amorphous solid: An amorphous solid does not have a well-defined and ordered arrangement of atoms or molecules. Examples include glass and rubber. While plastic may appear solid, it is not considered an amorphous solid because it has a more defined structure and repeating units.

2. High viscosity liquid: Viscosity refers to a material's resistance to flow. Although plastic can have different viscosities depending on its composition, it is typically not considered a high viscosity liquid. Liquids like honey or syrup have high viscosity, meaning they flow slowly. Plastic, on the other hand, usually has a more solid-like behavior.

3. Crystalline solid: Crystalline solids have highly ordered arrangements of atoms or molecules, resulting in specific geometric patterns. Examples include salt and diamond. While some plastics, like polyethylene, can have a partially crystalline structure, most plastics do not exhibit a fully crystalline structure. Therefore, plastic is not considered a crystalline solid.

4. Fluid: A fluid is a substance that can flow and take the shape of its container. This term is often used to describe liquids and gases. While some plastic materials may have fluid-like properties when melted, when they solidify, they become rigid and non-flowing. Therefore, plastic is not typically considered a fluid.

Based on the above explanations, we can conclude that the correct answer is:

1. Amorphous solid.