-atoms splitting to make heat which in turn turns a generator to make electricity
-car battery turning a car on
-food making you run
Answer:
A car battery turning a car on.
1, 2, 1, 1
2, 4, 2, 2
0, 2, 0, 0
Answer:
option b = 1,2,1,1
Explanation:
Chemical equation:
Zn + HCl → ZnCl₂ + H₂
Balanced chemical equation:
Zn + 2HCl → ZnCl₂ + H₂
There are two atoms of hydrogen one atom of zinc and 2 atoms of chlorine on both side of equation.
The common oxidation state of zinc is +2 while tat of chlorine is -1 that's why two chlorine atoms combine with one atom of zinc to accept two electrons.
Zn⁺²Cl₂²⁻ negative and positive charges are equal in magnitude that's why over all compound is neutral.
While two atoms of hydrogen combine with each other through covalent bond by shearing the electrons.
The oxidation state of zinc is increased from 0 to +2 so it gets oxidized while that of chlorine is -1 to -2 is chlorine gets reduced.
I think it is because it is directly about the north or south pole (I forget) so while all the other stars seem to rotate around because the Earth is rotating but the North Star is directly in the center. Don't take my word though.
Atoms are electrically neutral because they contain equal quantities of positively charged protons and negatively charged electrons. Electrons and protons have equal but opposite charges, so the result is no net charge. Ions are atoms that have gained or lost electrons.