From 36fccc0fffe138d42ab1b936902a747edd1b9d45 Mon Sep 17 00:00:00 2001 From: James Su Date: Wed, 25 Sep 2019 22:38:46 +0000 Subject: [PATCH] Update Unit 1: Chemistry Part 2.md --- .../SNC2DZ/Unit 1: Chemistry Part 2.md | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/Grade 10/Science/SNC2DZ/Unit 1: Chemistry Part 2.md b/Grade 10/Science/SNC2DZ/Unit 1: Chemistry Part 2.md index 571b194..187d97c 100644 --- a/Grade 10/Science/SNC2DZ/Unit 1: Chemistry Part 2.md +++ b/Grade 10/Science/SNC2DZ/Unit 1: Chemistry Part 2.md @@ -13,3 +13,27 @@ - `ite` ions make `ous` acides (suffix). $`HCLO_2 = `$ Chlor**ous** acid - `ate` ions make `ic` acides (suffix). $`HCLO_3 = `$ Chlor**ic** acid - Prefixes stay the same + +## Chemical Change +- Similar to chemical reaction + +## Evidence of chemical change: (observations that tell us its happening) +1. A new gas is formed (new odour, formation of bubbles) +2. A large change in energy (eg. Light, heat, sound, electricity) +3. A new colour is formed +4. A new solid is formed + +## Representing chemical reactions +- A Chemical equation! + - Used to model what is happening during a chemical reaction. + - We use an arrow instead of an equal sign to show `beomces`, `reacts to form`, `produces` + - On the **left** side, we always have the **`REACTANTS`**, (INPUT), these get used up in the chemical reaction + - There can be plus signs to show multiple `reactants`. (Recipes, we are adding them together) + - On the **right** side, we have the **`PRODUCTS**` (OUTPUT). + - Newly produced/made from `reactants` + - Plus signs show multple products, more like an **AND** more than anything else +- In a chemical reaction, reactant, molecules/atoms/formula units/ions reaarange to produce products moleccules/atoms/ions/formula units +- eg. Wax $`+`$ oxygen gase $`\rightarrow`$ Soot $`+`$ Water $`+`$ Carbon dioxide. +- A `word` equation +- $`\triangle`$ Greek letter to represent heat. +- $`C_{25}H_{52(g)} + O_{2(g)} \rightarrow^\triangle C_{(g)} + H_2O_{(g)} + CO_{2(g)}`$ \ No newline at end of file