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Update Unit 1: Chemistry Part 2.md

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Grade 10/Science/SNC2DZ/Unit 1: Chemistry Part 2.md
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## Chemical Change ## Chemical Change
- Similar to chemical reaction - Similar to chemical reaction
## Evidence of chemical change: (observations that tell us its happening) ## Evidence of Chemical Change: (observations that tell us its happening)
1. A new gas is formed (new odour, formation of bubbles) 1. A new gas is formed (new odour, formation of bubbles)
2. A large change in energy (eg. Light, heat, sound, electricity) 2. A large change in energy (eg. Light, heat, sound, electricity)
3. A new colour is formed 3. A new colour is formed
4. A new solid is formed 4. A new solid is formed
## Representing chemical reactions ## Representing Chemical Reactions
- A Chemical equation! - A Chemical equation!
- Used to model what is happening during a chemical reaction. - 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` - We use an arrow instead of an equal sign to show `beomces`, `reacts to form`, `produces`
@ -37,3 +37,31 @@
- A `word` equation - A `word` equation
- $`\triangle`$ Greek letter to represent heat. - $`\triangle`$ Greek letter to represent heat.
- $`C_{25}H_{52(g)} + O_{2(g)} \rightarrow^\triangle C_{(g)} + H_2O_{(g)} + CO_{2(g)}`$ - $`C_{25}H_{52(g)} + O_{2(g)} \rightarrow^\triangle C_{(g)} + H_2O_{(g)} + CO_{2(g)}`$
## Types Of Reactions
- 6 types of reactions
- synthesis
- decomposition
- single displacement
- double displacement
- combustion
- neutralization
## Sythensis
- When 2 or more substances combines into one substance
- $`A + B \rightarrow AB`$
## Decomposition
- With a substance breaks down into 2 or more substances
- $`AB \rightarrow A + B`$
## Single Diplacement
- When
## Double Displacement
## Combustion
## Neutralization