Question

Why are these ingredients considered as pure substance?

Answer 1

Answer:

All samples of substances, sometimes called pure substances, have identical properties. ... The compound acetylsalicylic acid (the active ingredient in aspirin) is a substance because it is a chemical compound that cannot be further reduced to other materials by physical means.

Answer 2

Answer:

Ingredients made up of only types of atoms or one type of molecules is considered as pure substances.

MORE TO KNOW -

• For ex - Hydrogen , Gold , Silver , Ammonia

• A pure substances is which can not be separated by any physical method.

• It has constant chemical composition.

• IMPURE SUBSTANCES -

IN chemistry , any substances which is made up of different type of atoms or molecules are called impure substances

it has variable chemical composition and can be separated by physical method .

It is not bounded toghether by chemically

for ex - Mixture of Salt and water , Mixture of Wheat and rice

Impures substance are of 2 types

mixtures of elements.

mixtures of compounds.

mixtures of elements and compounds.

Types of mixtures

i) Solution

ii) Suspension

iii) Colloids