Types Of Chemical Reactions
Chapter Name : Chemical Reactions And Equations |
Sub Topic Code : 102_10_01_02_04 |
Topic Name : Types Of Chemical Reactions |
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Sub Topic Name : Double Displacement Reaction |
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Introduction
New Products are formed by making and breaking of bonds. A displacement reaction is when exchange of elements takes place between the reactants. Displacement reactions are of two types: single and double. In single displacement, exchange of elements takes place. In double displacement: exchange of ions takes place. Double displacement reactions are of two types: Precipitation reaction and acid-base neutralization. Precipitations reaction: ionic substance comes out of solution as a solid precipitate Acid-Base neutralization: when an acid and base react.
Pre-Requisites:
Reaction, reactants, products
Activity:
Acid reacts with base to give salt plus water. Antacid tablets used to neutralize the acidity in stomach.
Real Life Question:
How do you remove salts from water for water treatment?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Chemical change | When two or more substances react to form new substances. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Antacid tablet are a remedy for acidity | Antacid tablets are basic in nature. They neutralize the acidity in the stomach. |
Real life uses :
Neutralization of stomach acidity.
Places to visit :
Kitchen, medical store.
Practical examples around us
| Examples | Explainations |
|---|---|
| Neutralization reaction | Antacid tablets used to neutralize acidity in the stomach. |
What you learn in Theory:
New Products are formed by making and breaking of bonds. A displacement reaction is when exchange of elements takes place between the reactants. Displacement reactions are of two types: single and double. In single displacement, exchange of elements takes place. In double displacement: exchange of ions takes place. Double displacement reactions are of two types: Precipitation reaction and acid-base neutralization. Precipitations reaction: ionic substance comes out of solution as a solid precipitate Acid-Base neutralization: when an acid and base react.
What you learn in Practice:
Precipitation reaction is sometimes used for treating water.