What is carbon dioxide an example of?

How does litmus paper indicate an acid?

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat