When two or more than two elements called reactants join together in a chemical way to make entirely new different thing called products. This process is called chemical reaction.
Types of chemical reaction
Chemical reactions may be endothermic or exothermic.
Exothermic Reactions are those reactions during which heat is evolved like burning of coal.
Endothermic Reactions are those reactions during which heat is absorbed or those reactions which need heat to kick start the reaction like cooking of food.
Chemicals Reactions Around us
- Fizzy drink
- Digestion of food
- Rusting of iron
- Cleaning of stain
- Making yogurt from milk
- Cooking of food
Signs of a Chemical Reaction
Mostly first sign of a chemical reaction is the emission of heat, light, or some kind of sound.
Emission of odor, smell or fragrance. Change in the color of the reactants and formation of entirely different thing. These may be some sort of ■■■■■■■■■.
Where Chemical Reactions Exist?
Chemical reactions are performed everywhere at home, office or labs. When you make a yummy cake at home with the help of eggs and flour you have performed a chemical reaction. when you mix oxygen and hydrogen in your lab vessels to make water, it is a chemical reaction.
Self Care
- Always handle chemicals with great care.
- Never try to mix unknown chemicals.
- Keep explosive chemicals separate from other things.
- Never perform an experiment without proper knowledge about the chemicals.
- Cover your hands and wear safety goggles in a lab.
Conclusion
Two or more elements join to make a new compound this process is called chemical reaction these chemical reactions may be endothermic or exothermic on the basis of heat evolution or absorption.