Hydrogen Cyanide is a toxic gas, Mercury is a toxic metal, Antimony is a toxic solid.
Gasoline is a flammable liquid, Methane a flammable gas, Wood a flammable solid.
Hydrochloric acid is a corrosive liquid, hydrogen Chloride is a corrosive gas, and there isn't really any corrosive solids.
CO is a reactive gas, nitric acid is a liquid, and Francium (reactive to water, a pea sized amount is said to clear an swimming pool).
Radioactive materials include hard water (liquid; heavy water that has been exposed to radiation), Caesium is a solid, and Radon is a radioactive gas.
All of these in some way shape or form are byproducts of some process.
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How to calculate how many calories I need to eat to lose weight?
Since 1 pound of fat equals approximately 3,500 calories, by reducing your caloric intake by 3,500 to 7,000 calories each week, you'll safely lose about 1 to 2 pounds each week. Keep in mind: Your daily calorie intake—the calories you eat—should never dip below 1,200 (for women) or 1,800 (for men).
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hope ths helps :)
Answer: i beleive it is the natinol institute of health :)