CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Physical and Chemical Changes

Differentiate...

Question

Differentiate between physical and chemical changes and select the false statement.

A

In physical changes new substance are not formed whereas in chemical changes it does

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

In chemical changes new substance are not formed whereas in physical changes it does

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

Physical changes are reversible whereas chemical changes are irreversible

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Physical properties changes in physical change and chemical properties change in chemical change

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B In chemical changes new substance are not formed whereas in physical changes it does
A physical change is a temporary and reversible change in which the physical properties of the substance changes without altering the composition of the substance.
A chemical change is a permanent, not easily reversible change in which the identity of the substance is altered to produce one or more new substances.

Hence, the correct option is $B$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Changes, in which new substances with different properties are formed, are called

(a) physical changes
(b) chemical changes
(c) irreversible changes
(d) reversible changes

Q. Matter undergoes a change. The changes are of two types: Physical and chemical change.

A physical change is a change that involves only a change in the physical state of matter. Its chemical properties remain the same. Usually increasing the temperature or applying pressure or both bring about a physical change. On reversing the condition, that is reducing the temperature or reducing the pressure or both, the original state of matter is restored. In other words, physical changes are reversible.

A chemical change is a change that involves a change in the chemical composition of matter. A new substance is formed. In a chemical change, new chemical and physical properties of the substance are formed. In a chemical change, the chemical and physical properties of the substance formed will be different from the original substance.

In a chemical change, the properties that change are :

Q. Matter undergoes a change. The changes are of two types : Physical and chemical change. A physical change is a change that involves only a change in the physical state of matter.
Its chemical properties remain the same. Usually increasing the temperature of applying pressure or both brings about a physical change. On reversing the condition, i.e., reducing the temperature or reducing the pressure or both, the original state of matter is restored. In other words, physical changes are reversible. A chemical change is a change that involves a change in the chemical composition of matter. A new substance is formed. In a chemical change, the chemical and physical properties of the substance is formed. In a chemical change, the chemical and physical properties of the substance formed will be different from the original substance. When zinc carbonate is heated and cooled, the change(s) that are observed are :

Four students have their own opinion about reversible and irreversible changes. Who among the following is correct?

Rohan: Both physical and chemical changes are reversible.

Sam: Both physical and chemical changes are irreversible.

Tom: Physical changes are irreversible and chemical changes are reversible.

Riah: Chemical changes are irreversible and physical changes are reversible

Q. Properties of physical and chemical changes are given below. Sort the properties of physical and chemical changes in the correct column.

1. New substances are formed.
2. Precipitation is an example of this.
3. Products have new composition.
4. Composition of substance remains same.
5. It is usually permanent.
6. It is usually temporary.
7. Burning of LPG is an example of this.
8. It is reversible.

Physical change	Chemical change
1. 2. 3. 4.	5. 6. 7. 8.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Physical and Chemical Changes

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Physical and Chemical Changes

Standard VII Chemistry

Join BYJU'S Learning Program

CrossIcon