Question

What are Various observation
of Chemical reaction?​

Answer 1

Answer:

Yes; new substances formed, as evidenced by the color changes and bubbles. Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.

Explanation:

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Answer 2

➤ Answer

Chemical reaction - Chemical reactions are the process in which one or more substances (reactants) reacts to form new substances (product) with entirely new properties.

Example - $\sf Mg + O_{2} \longrightarrow MgO$

Various observation of chemical reactions

• Change in the state.
• Change in colour.
• Evolution of gas.
• Change in temperature.
• Formation of insoluble product (precipitate)

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➤ More to Know

• The substances that take part in a chemical reactions are known as reactant.

• The new substances produced as a result of chemical reaction is known as product.

• Total mass of reactant is always equal to the total mass of product.

• There are mainly 5 types of chemical reactions -

1. Combination reaction.
2. Decomposition reaction.
3. Displacement reaction.
4. Double displacement reaction.
5. Oxidation and reduction.

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