Which material can be burnt easily?, Glass, Stone, Paper, Metal, Which of the following is biodegradable?, Plastic bottle, Banana peel, Glass bottle, Aluminum can, Why should flammable materials such as paper and wood be kept away from fire?, They can easily catch fire., They become heavier., They dissolve in water., They cannot be used again., Iron is commonly used to make gates and fences. What chemical property should people be aware of when using iron?, It melts easily in water., It reacts with water and oxygen, causing rust., It is biodegradable., It burns quickly., Your class is cleaning the school garden. Which group of materials should be placed in the compost pit because they are biodegradable?, Plastic bottles, glass, and aluminum cans, Fruit peels, dry leaves, and vegetable scraps, Metal cans, rubber, and plastic wrappers, Styrofoam, bottles, and cans

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