Answer:
C. Valence electrons
Explanation:
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Carbon Dioxide is formed when two oxygen atoms chemically combine with a carbon atom. The term that will best describe carbon dioxide is a compound. That will make the correct answer D.
An intensive property is a property that does not change depending on how much mass of it you are considered. An example of an intensive property is density. No matter how much water you examine, the density of the sample will be 1g/cm³.
Explanation:
Sodium Carbonate = Na2CO3
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Because they get new pieces of information from experiments