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Questions and Answers
What is plastic?
What is plastic?
- A polymeric material that cannot be molded or shaped
- A polymeric material that can be molded or shaped (correct)
- A metallic material that can be molded or shaped
- A natural material that can be molded or shaped
What special properties do plastics possess?
What special properties do plastics possess?
- High density and low electrical conductivity
- Low density and high electrical conductivity
- Low density and low electrical conductivity (correct)
- High electrical conductivity and transparency
What are some examples of products made from plastics?
What are some examples of products made from plastics?
- Ceramic garden hoses
- Glass windows
- Foamed polystyrene food containers (correct)
- Metallic food containers
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Study Notes
What is Plastic?
- Plastic is a synthetic or semi-synthetic organic solids that are moldable and can be melted to form a range of materials with different properties.
- Plastics are typically made from petrochemicals and are often combined with other materials, such as fillers, reinforcements, and pigments, to produce a wide range of products.
Properties of Plastics
- Plastics possess a range of special properties, including:
- Low density and weight
- High strength-to-weight ratio
- Resistance to corrosion and chemicals
- Insulation properties
- Flexibility and moldability
- Low cost and affordability
Examples of Plastic Products
- Packaging materials: bottles, containers, bags, and wraps
- Consumer goods: toys, appliances, and furniture
- Medical devices: syringes, implantable devices, and medical tubing
- Automotive parts: dashboards, bumpers, and fuel tanks
- Textiles: synthetic fibers, clothing, and upholstery
- Construction materials: pipes, panels, and insulation materials
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