Answer:
1) electron=19 Proton=19 Neutron=39-19=20
2) 1
3) in pic
Answer:B
Explanation:
Atoms and molecules are always moving or vibrating. (just took the test)
They both represent equations, they both use lines
Answer:
aluminium is more reactive than carbon. carbon is used to displace less reactive metals from their compounds. this happens since the carbon reacts with the other substance(s) in the compound, and the less reactive metal does not.