diff --git a/Electronics/Physics_of_electricity/Matter_and_atoms.md b/Electronics/Physics_of_electricity/Matter_and_atoms.md
index 36c49bb..a339718 100644
--- a/Electronics/Physics_of_electricity/Matter_and_atoms.md
+++ b/Electronics/Physics_of_electricity/Matter_and_atoms.md
@@ -37,4 +37,4 @@ tags: [physics]
 ### Atomic weight
 * The atomic weight of an atom is its mass.
 * The mass is determined by the number of protons and neutrons in the nucleus.
-* An electron $\frac{1}{1845}$ the mass of a proton. It's mass is so neglible that it is not considered attributable to the atomic weight. 
\ No newline at end of file
+* An electron $\frac{1}{1845}$ the mass of a proton. Its mass is so neglible that it makes no marginal difference to the atomic weight and is not included. 
\ No newline at end of file