Chemical Equations
Chapter Name : Chemical Reactions And Equations |
Sub Topic Code : 102_10_01_01_01 |
Topic Name : Chemical Equations |
|
Sub Topic Name : Writing A Chemical Equation |
|
Introduction
A chemical change is when a substance combines with another substance to form new substances. Chemical equations show the changes occurring during chemical reactions. Chemical equations can be in terms of words or symbols. Left hand side of the arrow is the reactants, and right hand side of the arrow is the products.
Pre-Requisites:
Atom, compound, element,
Activity:
Various chemical reactions occur in day to day life. Ex. The Enzyme in our body help to break down food by the help of chemical reactions. Salt and sugar dissolving in water is a chemical reaction.
Real Life Question:
How can you show chemicals reacting with each other?
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 |
|---|---|
| Dissolve salt in water | Salt and water react resulting in salt dissolving in water. This can be shown in a form of a chemical equation |
Real life uses :
Chemical reactions help to represent and visualize the interactions between the reactants to give the products.
Places to visit :
Kitchen.
Practical examples around us
| Examples | Explainations |
|---|---|
| Salt dissolving in water | NaCl reacts with H2O to give a mixed solution of salty water. |
What you learn in Theory:
A chemical change is when a substance combines with another substance to form new substances. Chemical equations show the changes occurring during a chemical reactions Chemical equations can be in terms of words or symbols. Left hand sides of the arrow are the reactants and right hand side of the arrow are the products.
What you learn in Practice:
Chemical equations display the chemical reactions taking place.