Answer:1. Food waste is a biodegradable material. Practical Use: Composting to create fertilizer for plants. Biodegradable materials break down naturally, so food waste can be composted to enrich soil.2. Medicine is a reactive material. Practical Use: Treating illnesses and injuries. Medicines interact with the body to produce therapeutic effects, making them reactive materials. 3. Gasoline is a flammable material. Practical Use: Fuel for vehicles. Flammability allows gasoline to be burned in engines to power cars and other vehicles. 4. Wood is a combustible material. Practical Use: Fuel for fires and building material. Wood's ability to burn makes it useful as fuel, while its other properties make it useful in construction.5. Bleach is a reactive material. Practical Use: Disinfecting and whitening. Bleach's reactivity allows it to kill bacteria and remove stains.