<h2>Answer:</h2>
What does Atomic number represents ___________.
What does the Mass number represent ___________
Periods are _____________ rows.
Groups are _____________ columns.
Total elements in periodic table are _____________.
Answer:
Chlorine
Explanation:
The P usually stands for Protons, and that is usually the element number. (chlorine is 17) N is for neutron
C9H20 + 14O2 --> 9CO2 + 10H2O
When atoms and molecules speed up or slow down, that is a physical change. When they change state from liquid to solid or from gas to liquid, that is a physical change. ... The ions or molecules can still come back together to form the original substance
