16. What is chemical equation? How to write a chemical equation and limitation of chemi-
cal equation?
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A complete chemical equation represent the reactants, products and their physical States symbolically
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SYMBOLIC REPRESENTATION OF A CHEMICAL REACTION IS CALLED AS CHEMICAL EQUATION
A CHEMICAL EQUATION HAS 3 PARTS
- ARROW INDICATING THE DIRECTION OF THE REACTION
- REACTANTS
- PRODUCT
LIMITATIONS ARE:
- NO MENTIONING OF AMOUNT OF SUBSTANCE
- NO MENTIONING OF PHYICAL STATE
HOW TO WRITE CHEMICAL EQUATION
REACTANTS WITH + SIGN IN LEFT SIDE
- REACTANTS : THINGS WHICH REACTS TO FORM NEW PRODUCTS ARE CALLED REACTANTS
PRODUCT WITH + SIGN IN RIGHT SIDE
- PRODUCTS : NEW SUBSTANCE FORMED IN A CHEMICAL EQUATION IS CALLED PRODUCTS
IN MIDDLE THERE IS ARROW WHICH INDICATES THE DIRECTION
EXAMPLE: 2Mg + O2 ---------> 2MgO
[REACTANT] [PRODUCT]
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