What Is Common In Acids And Bases
Chapter Name : Acids Bases And Salts |
Sub Topic Code : 102_10_02_02_01 |
Topic Name : What Is Common In Acids And Bases |
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Sub Topic Name : Acids And Bases In Water |
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Introduction
Acids in water – In presence of water hydrogen ions are produced. These hydrogen ions exist with water molecules making hydronium ions. Basic when in water produce hydroxide ions. Bases soluble in water are called alkalis: They are soapy to touch, bitter in taste and corrosive. Dilution – Mixing an acid or base with water results in decrease in the concentration causing dilution.
Pre-Requisites:
Reaction, reactants, products, acids and bases
Activity:
Soap is alkaline in nature.
Real Life Question:
Why is acid added to water and not the other way around?
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 |
|---|---|
| Soaps | Soaps are made of bases. When they are dissolved in water they become soapy to touch. |
Real life uses :
Soap is made from alkali.
Places to visit :
Bathroom, Laundry.
Practical examples around us
| Examples | Explainations |
|---|---|
| Soap is made from alkali | When oils, alkali and water are mixed, they give soap. |
What you learn in Theory:
Acids in water – In presence of water hydrogen ions are produced. These hydrogen ions exist with water molecules making hydronium ions. Basic when in water produce hydroxide ions. Bases soluble in water are called alkalis: They are soapy to touch, bitter in taste and corrosive. Dilution – Mixing an acid or base with water results in decrease in the concentration causing dilution.
What you learn in Practice:
Soaps are alkaline in nature.