From 146777e11b5442ee1fd7bf8ab2e45f23e0a51065 Mon Sep 17 00:00:00 2001
From: James Su <amagicalsoup@gmail.com>
Date: Fri, 13 Sep 2019 19:14:25 +0000
Subject: [PATCH] Update Unit 1: Chemistry.md

---
 Grade 10/Science/SNC2DZ/Unit 1: Chemistry.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Grade 10/Science/SNC2DZ/Unit 1: Chemistry.md b/Grade 10/Science/SNC2DZ/Unit 1: Chemistry.md
index 9993afd..700e3c0 100644
--- a/Grade 10/Science/SNC2DZ/Unit 1: Chemistry.md	
+++ b/Grade 10/Science/SNC2DZ/Unit 1: Chemistry.md	
@@ -156,6 +156,11 @@ are all mono-valent. (not multi-valent)
 |Dihydrogen phosphate ion|$`H2PO_4^-`$|
 |Monohydrogen phosphate ion|$`HPO_4^{2-}`$|
 
+- For above, we use mono for phosphate to avoid ambigious cases, where $`H_2PO_4^{-}`$ and $`H_2PO_4^{2-}`$ are the same if we don't put `mono` infront. As for the Hyrogen carbonate ion
+we don't put a mono due to no ambigious cases. 
 
-
+## Molecular Compounds
+- Are not made of ions, instead molecules
+- Shared pairof electrons -> `covalent bonds`
+-