Trillions of cells join together to form ?

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

How does the motion of particles in a gas change as the gas cools