Question

Define
a) Physical change
b) Chemical change
c) Displacement reaction
d) Double displacement reaction​

Answer 1

Answer:

Physical change:

A change in matter which does not alter the chemical properties of the matter

Chemical change:

A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed.

Displacement reaction:

A single-displacement reaction, also known as single replacement reaction or exchange reaction, is a chemical reaction in which one element is replaced by another in a compound.

Double displacement reaction:

A salt metathesis reaction, sometimes called a double replacement reaction, double displacement reaction, is a chemical process involving the exchange of bonds between two reacting chemical species which results in the creation of products with similar or identical bonding affiliations.

Answer 2

Explanation:

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1. Physical Changes :- A change in matter which does not alter the chemical properties of the matter.
2. Chemical change :- A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed. It results when a substance combines with another to form a new substance (synthesis or either decomposes to form more substances).
3. Displacement reaction :- A single-displacement reaction, also known as single replacement reaction or exchange reaction, is a chemical reaction in which one element is replaced by another in a compound.
4. Double displacement reaction :- A salt metathesis reaction, sometimes called a double replacement reaction, double displacement reaction, is a chemical process involving the exchange of bonds between two reacting chemical species which results in the creation of products with similar or identical bonding affiliations.

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