Answer: it’s A and B
Explanation: everyone else on this post was giving you the wrong answer.
Most of the elements are metals
<span>4) Formation of a gas
When methane burns, it produces the gases water vapor and carbon dioxide.
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Atomic mass is the mass of an atom, particle, or molecule. The atomic mass is determined by the number of protons and neutrons in the atom. For example, Oxygen has 8 protons (as seen by the atomic number) and 8 neutrons which gives oxygen an atomic mass of 16.
