Understanding Materials and the Environment

What does flammability mean?

• Flammability is the ability to freeze a substance.

• Flammability is the ability of a substance to dissolve in water.

• Flammability is the ability of a substance to ignite and burn.

• Flammability refers to the color of a substance.

Which of the following materials is most flammable: wood, metal, or glass?

• rubber

• wood

• ceramic

• plastic

What is an example of a highly reactive chemical?

• Gold

• Sodium

• Oxygen

• Carbon

Name a type of biodegradable material.

• PVC

• Styrofoam

• Polylactic acid (PLA)

• Polyethylene

How does plastic waste impact the environment?

• Plastic waste harms ecosystems, wildlife, and human health.

• Plastic waste improves soil quality.

• Plastic waste is beneficial for marine life.

• Plastic waste has no effect on air quality.

What is one way to test for flammability?

• Soak the material in water.

• Rub the material with sandpaper.

• Apply a small flame to the material.

• Place the material in a freezer.

What does it mean for a material to be degradable?

• A degradable material can break down naturally into non-toxic substances.

• A degradable material is made from synthetic substances.

• A degradable material remains unchanged in the environment.

• A degradable material can only be recycled.

Why is recycling important for the environment?

• Recycling is only beneficial for businesses, not the environment.

• Recycling increases pollution and waste.

• Recycling is important for the environment because it conserves resources, reduces pollution, saves energy, and minimizes landfill waste.

• Recycling has no impact on energy consumption.

Can food scraps be considered biodegradable?

• Food scraps can only be composted, not biodegradable.

• Yes, food scraps can be considered biodegradable.

• Food scraps are non-biodegradable.

• Food scraps are toxic and cannot decompose.

What happens to non-biodegradable materials in landfills?

• Non-biodegradable materials decompose quickly in landfills.

• Non-biodegradable materials persist in landfills for a long time without decomposing.

• Non-biodegradable materials turn into compost in landfills.

• Non-biodegradable materials are recycled in landfills.