Which statement describes the relative energy of the electrons in the shells of a calcium atom?
(1) an electron in the first shell has more energy than an electron in the second shell.
(2) an electron in the first shell has the same amount of energy as an electron in the second shell.
(3) an electron in the third shell has more energy than an electron in the second shell.
(4) an electron in the third shell has less energy than an electron in the second shell.

The answer is (3) An electron in the third shell has more energy than an electron in the second shell. The energy of electron will increase when number of shell increase.

Coal i believe hope this

First up write the aim
then write the materials reqd.
then the procedure which you follow
then observation
then conclusion
then you can write lab safety rules or precautions(you can avoid if u want).
lemme' give an example
aim: to observe the double displacement reaction
materials reqd: bacl2 and na2so4, test tubes and a dropper
procedure:
1. take bacl2 in a test tube and na2so4 in the other.
2. then pour bacl2 into na2so4 solution.
3. observe
observation:
you will see that a white precipitate is formed called baso4. along with that common salt or nacl is formed.
the equation is
bacl2+na2so4=baso4+2nacl
conclusion:
a double displacement reaction is observed.
hope it