Answer:
Theory
Explanation:
the model of an atom, for example isnt a method, its showing a theory in which scientists have discovered and analyze particles, such as atoms. Therefore it is a theory, something that is a known fact
hope this helped:)
B
calculation
Answer: nitrogen
Explanation: bc
air that moves from high pressure to low pressure
Answer:the CO2 molecule has an excess of electron
C3H6
please mark me as brainlest
