Learn Science with Free Lessons & Tips

Chemical reactions and equations :

Equation: 

• Reactant + product = chemical equation
• Reactant; The substance which undergo a chemical change  in the reaction 

Method of writing a reaction: 

• Arrow must be placed between the reactants on Left hand side and product on the right hand side 
• Plus sign (+) must be written between the reactants  
• Arrow head must point towards the products which shows the direction of the reaction.

Example:  Magnesium + oxygen= magnesium oxide 

Mg+02→MgO

Balancing. a chemical equation : 

1. First draw boxes around each formula
2.  List the number of atoms of different elements present in unbalanced equation
3. Start balancing with compound that contains maximum no of atoms
4. Finally check the correctness of the balanced equation.
5.  Write symbols of physical state 

Example: step -1

Fe+H20 →Fe3O4+ H2

Step -2 : 

step 3: 

3Fe+ 4H2O→Fe3O4+4H2

Step 4: 

Step 5: 

3Fe(s) +4H20(g)→Fe3O4(s) + 4H2(g)

>> switching from petrochemicals to oleochemicals.

>>Oleochemicals are chemical compounds derived from natural fats and oils that can be used as raw materials or as supplemental materials in a variety of industries. 

>> oleochemicals that are commonly used in today’s market include:

• Palm oil
• Coconut oil
• Soy
• :::::::::::Oleochemicals are used in a wide range of industries including::::::::::::
• • Personal care
  • Cosmetics
  • Coatings, adhesives, elastomers and sealants
  • Household and industrial cleaning
  • Lubricants, grease and metalworking
  • Food
  • Pharmaceuticals and nutraceuticals