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Grade 9/Science/SNC1DZ/Study_Sheet.md

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+# Unit 1
+
+# Unit 2
+
+# Physical Properties
+- A characeristic of a substance that can be determined without changing the composition ("make-up") of that substance
+- Characteristics can be determinded using your 5 senses and measuring instruments 
+  - smell, taste, touch, hearing, sight
+  - scales, tape, measuring meter
+  
+> # Qualitative and Quantitative Properties
+
+> |Type|Definition|Example|
+> |:---|:---------|:------|
+> |Quantitative Property|A property that is |
+> |Qualitative Property|A property that is NOT measured and has ```no numerical value```|
+
+> ## Quantitative physical Properties
+> - **```Density```**" amount of ```stuff``` (or mass) per unit volume (g/cm<sup>3</sup>)
+> - **```Freezing Point```**
+
+>> ## Common 
+
+>> |Type|Definition|Example|
+>> |:---|:---------|:------|
+>> |Lustre: Shininess of dullness|Referred to as high or low lustre depending on the shininess|
+>> |Clarity: The ability to allow light through||```Transparent``` (Glass) <br>```Translucent``` (Frosted Glass) <br>```Opaque``` (Brick)|
+>> |Brittleness: Breakability or flexibility| Glass would be considered as brittle whereas slime/clay are flexible|
+>> |Viscosity: The ability of a liquid or gas to resist flow or not pour readily through|Refer to as more or less viscous|Molasses is more viscous, water is less (gases tend to get"thicker as heated; liquids get runnier)|
+>> |Hardness: The relative ability to scratch or be scratched by another substance|Referred to as high or low level of hardness. Can uses a scale (1 is wax; 10 is diamond)|
+>> |Malleability: the ability of a substance ```to be hammered``` into a thinner sheet or molded||Silver is malleable<br> Play dough/pizza dough is less<br> glass is not malleable|
+>> |Ductility: the ability of a substance to be pulled into a finer strand||Pieces of copper can be drawn into thin wires, ductile|
+>> |Electrical Conductivity: The ability of a substance to allow electric current to pass through it|Refer to as high and low conductivity|Copper wires have high conductivity<br> Plastic has no conductivity|
+
+> ## Crystalline vs. Amorphous Solids
+
+# 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```
+
+> E.g. ability of nails /cars to rust
+> Firewors are explosive
+
+> Denim is resistant to soap, but is combustible
+
+> Baking soda reacts with vinegar and cake ingredients to rise
+
+> Bacterial cultures convert milk to cheese, grapes to wine, cocoa to chocolate
+
+> 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
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