ANATOMY

GENERAL ANATOMY

DIGESTIVE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ changes do not change a substance into a new substance.
A
chemical
B
physical
Explanation: 

Detailed explanation-1: -A change in which a substance undergoes a change in its physical properties is called a physical change. A physical change is generally reversible. In such a change no new substance is formed.

Detailed explanation-2: -In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.

Detailed explanation-3: -Physical changes do not produce a new substance. Chemical changes result in the production of a new substance and cannot be reversed.

Detailed explanation-4: -When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged. Physical change can be reversible or irreversible. A physical change affects only physical properties i.e. shape, size, etc. A physical change involves very little to no absorption of energy.

Detailed explanation-5: -Some common examples of physical changes are: melting, freezing, condensing, breaking, crushing, cutting, and bending.

There is 1 question to complete.