Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust. Reactivity is the ability of matter to react chemically with other substances.
Food poisoning comes from eating foods that contain germs like bad bacteria or toxins. Bacteria are all around us, so mild cases of food poisoning are common. These can cause diarrhea and an upset stomach. When this happens, you might hear your parents call it a stomach bug or stomach virus.
