HELP ASAP Which of the following are correct statements about atomic structure?
Check all that apply.
A.
Electrons are hidden deep in the nucleus of an atom.
B.
The valence shell is the outermost layer of electrons in an atom.
C.
Electrons are located in layers around the nucleus.
\D.
There are two electrons in every electron shell.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

listen, you cant how young you were.

"you didn't chose the stud life. the stud life chose you."