Question

Everything about chemical reaction and its characteristics

Answer 1

Answer:

1)The combination of two or more reactant is called the chemical reaction.

2) The material which combine to form a molecule is called reactant.

3) The combined material are called products.

Explanation:

4) There are many type of chemical reaction.

# Combination reaction

#Decomposition reaction

#Displacement reaction

# Double Displacement reaction

# Oxidation

#Reduction

#Exothermic

#Endothermic

Answer 2

Chemical reaction is a process of forming new substance from another substances due to bonding of two different substances. There are two main things in a chemical reaction: Product and reactant. Product is a new substance formed. And, reactant is chemical due to which/on which reaction occurs. Chemical reactions occurs when some chemicals are reacted with other chemicals. A new substance is formed when the different chemicals are mixed/added together. All the chemicals and Compounds which we see are formed due to process of chemical reaction. We know that, When two or more elements are bonded together, then the new substance compound is formed. The all compounds available naturally and artificially are formed due to bonding of two different elements i.e. Chemical reaction.

In a chemical reaction, the new substances are formed due to reaction/contact between two different substances. While chemical reaction, no atoms are destroyed nor new atoms are formed. Only, The atoms are rearranged in such a way that the the new substance is formed.

Chemical reactions are of 4 types: Synthesis, Decomposition, Single replacement , Double replacement.

• Synthesis reaction

A + B  →  AB  (Simple compounds formation)

• Decomposition reaction

AB  →  A + B  (Opposite of synthesis reaction)

• Single Displacement reaction

A + BC    →  AB + C  (Any of chemical is displaced)

• Double displacement reaction

AB + CD    →  AD + BC

Because of various chemical reactions done by scientists and development in chemistry has bought major changes in the world today. Everyday, scientists try to discover new chemicals, new compounds, new elements by doing complex chemical reactions. All the material used for making objects are made by doing chemical reactions only.

Examples of Chemical reaction:

• CH4 + 2O2 → CO2 + 2H2O
• C4H6O6 + NaHCO3 → NaC4H5O6+ H2O + CO2
• Na + Cl → NaCl
• 2 H2O → 2 H2 + O2
• HBr + NaOH → NaBr + H2O