Answer:
i want to say nuclues but again i also think that it is electron shells
Answer:
Kauai
Explanation:
I look this up when I am doing math
Answer:
OXYGEN
I don't know what to say for the 20 character limit
Answer:
C The experiment shows that the red substance experienced a chemical change.
Explanation:
Apparently, adding heat caused the red substance to decompose into a gas and a metallic liquid. If it were simply a phase change, the original red substance could be expected to return when the temperature cooled. Because the substance apparently decomposed, it is clearly not an element. At no point in the experiment is there any evidence of a plasma being formed.
The observed decomposition is a chemical change.