Answer:
2:A handwarmer gets warm when it is opened and exposed to air.
3:Propane ignites to heat a grill.
4:Cotton is dyed red to make a dress.
Explanation:
The definition of a chemical property is when a property of characteristic of a substance that is <em><u>observed</u></em> during a reaction in which a chemical has been changed
Protons can't change in stable elements so its means that is Barium
Red blood cell is the answer I think
Answer:
They spread apart to fill the enclosed object. In other words they move freely...
hope this helped you
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