Update Unit_2_Chemistry_Study_Sheet.md

Grade 9/Science/SNC1DZ/Unit_2_Chemistry_Study_Sheet.md

@@ -97,7 +97,7 @@
 </tr> 
 <tr>
 <td>Physical Change</td>
-<td>A change in which <b>the composition of the substance remains unaltered` and `no new substances are produced</b></td>
+<td>A change in which <b>the composition of the substance remains unaltered and no new substances are produced</b></td>
 </tr>
 <tr>
 <td>Chemical Change</td> 
@@ -138,6 +138,14 @@
 <td>Valence Electrons</td>
 <td>Number of electrons on the most outer orbit/shell of the element</td>
 </tr>
+<tr>
+<td>Element</td>
+<td>A single particle that is on the periodic table, currently, we have 118 elements discovered</td>
+</tr>
+<tr>
+<td>Compound</td>
+<td>A bunch of elements, or a compound of elements, a particle that is made of many different elements</td>
+</tr>
 </table>
 
 ## Particle Theory of Matter
@@ -191,7 +199,7 @@
 
 <img src="http://www.chemistryland.com/CHM151Lab/Lab02Density/Graph.jpg" width="300">
 
-## Quantitative physical Properties
+## Quantitative Physical Properties
  - **```Density```**: amount of ```stuff``` (or mass) per unit volume (g/cm<sup>3</sup>)
  - **```Freezing Point```**: point where water solidifies (0<sup>o</sup>C)
  - **```Melting Point```**: point where water liquefies (0<sup>o</sup>C)
@@ -212,7 +220,7 @@
  |Form: Crystalline Solid|Have their particles arranged in an orderly geometric pattern|Salt and Diamonods|
  |Form: Amorphous Solid|Have their particles randomly distributed without any long-range-pattern|Plastic, Glass, Charcoal|
 
-# Chemical Property
+## Chemical Property
 
 - A characteristic (property) of a substance that describes its ability to undergo ```changes to its composition to produce one of more new substances. AKA BEHAVIOUR. Everything has one!```
 - ```Cannot be determined by physical properties```
@@ -224,6 +232,9 @@
 - CLR used to clean kettles, showerheads because it breaks down minerals
 - Silver cleaner for tarnished jewellery, dishes because silver reacts with air to turn black.
 
+## Five Aspects Of Chemical Change
+<img src="https://files.catbox.moe/4mt740.png" width="600">
+
 ## Periodic Table
 <img src="https://chem.libretexts.org/@api/deki/files/121316/1.png?revision=1&size=bestfit&width=1300&height=693" width="1200">