Chemistry SL
6
Chapters
243
Notes
Chapter 1 - Models Of The Particulate Nature Of Matter
Chapter 2 - Models Of Bonding & Structure
Chapter 3 - Classification Of Matter
Chapter 4 - What Drives Chemical Reactions?
Chapter 5 - How Much, How Fast & How Far?
Chapter 6 - What Are The Mechanisms Of Chemical Change?
Chemistry SL
Chapter 4 - What Drives Chemical Reactions?
Unraveling Exothermic & Endothermic Reactions: Dive Deep!
361 words
2 mins read
Last edited on 5th Nov 2024
Table of content
Basics to know📌
- System: That's where our chemical reaction is happening! Think of it as the stage where our chemical actors perform.
- Surroundings: Everything around our stage or system. Basically, the audience!
Exothermic reactions🧊
- Heat goes out from the system to the surroundings. It's like giving your friend a hot slice of pizza!
- Imagine you feel warm when you rub your hands together super fast. That's because energy is being released!
- Enthalpy change (ΔH): It's negative (like when your bank balance goes down after buying candy).
- Example: Burning of wood. Ever felt warm around a campfire? The wood undergoes an exothermic reaction, releasing energy in the form of heat.
Endothermic reactions🔥
- Heat is absorbed into the system from the surroundings. Think of it as getting a tan from the sun.
- Have you ever felt cold after putting on hand sanitizer? That's because it's evaporating and absorbing energy from your hand!
- Enthalpy change (ΔH): It's positive (like getting birthday money).
- Example: Photosynthesis in plants. They take in sunlight (energy) to turn water and carbon dioxide into glucose.
Unlock the Full Content! 
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Chemistry SL
Chapter 4 - What Drives Chemical Reactions?
Unraveling Exothermic & Endothermic Reactions: Dive Deep!
361 words
2 mins read
Last edited on 5th Nov 2024
Table of content
Basics to know📌
- System: That's where our chemical reaction is happening! Think of it as the stage where our chemical actors perform.
- Surroundings: Everything around our stage or system. Basically, the audience!
Exothermic reactions🧊
- Heat goes out from the system to the surroundings. It's like giving your friend a hot slice of pizza!
- Imagine you feel warm when you rub your hands together super fast. That's because energy is being released!
- Enthalpy change (ΔH): It's negative (like when your bank balance goes down after buying candy).
- Example: Burning of wood. Ever felt warm around a campfire? The wood undergoes an exothermic reaction, releasing energy in the form of heat.
Endothermic reactions🔥
- Heat is absorbed into the system from the surroundings. Think of it as getting a tan from the sun.
- Have you ever felt cold after putting on hand sanitizer? That's because it's evaporating and absorbing energy from your hand!
- Enthalpy change (ΔH): It's positive (like getting birthday money).
- Example: Photosynthesis in plants. They take in sunlight (energy) to turn water and carbon dioxide into glucose.
Unlock the Full Content!
Dive deeper and gain exclusive access to premium files of Chemistry SL. Subscribe now and get closer to that 45 🌟
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