Question

What do you call a mixture where at least two substances are mixed and stay mixed together?
(A) Juice
(B) Colloid
(C) Suspension
(D) None of the above

Answer 1

Two or more substances combined, they are called Mixtures. They do not undergo any chemical changes. Some mixtures settle down when left undisturbed, while others don’t.

Complete step by step solution:
Let’s first get some idea about what a mixture is. Mixture is the physical combination of two or more substances without undergoing any chemical changes. Mixtures are the blending of chemical substances such as elements and compounds. Examples of the mixtures are sea water, air, ink, crude oil, gun powder, etc. There are two types of mixtures:
- Homogeneous mixture
- Heterogeneous mixture
HOMOGENEOUS MIXTURE: It is a type of mixture in which the composition remains uniform throughout the mixture. It consists of only one form. Examples of homogeneous mixture are milk, salt solution, sugar solution, blood, glue, etc.
HETEROGENEOUS MIXTURE: It is a type of mixture in which the composition does not remain uniform throughout the solution. It consists of two or more phases. Examples of heterogeneous mixtures are oil in water, orange juice, sandy water, etc.
Therefore, a mixture where at least two substances are mixed and stay mixed together should be a homogeneous mixture.

Hence the correct answer is option (D) None of the above.

Additional Information:
Difference between homogeneous and heterogeneous mixture.

HOMOGENEOUS MIXTURE	HETEROGENEOUS MIXTURE
Present in uniform composition	Not present in uniform composition
It consists of only one phase	It consists of two or more phase
Examples are True solutions	Examples are colloids, suspensions

Note: - Colloids and suspension are heterogeneous mixtures.
- Colloids are very small particles of any substance, dispersed throughout other substances. They don't settle when left undisturbed.
- Suspension is a type of mixture in which a solute like particles get settled at the bottom in a solvent like phase.