Which of the following options correctly describes a suspension?
The particles in a suspension settle over time and can be separated by filtration.
A suspension is a heterogeneous mixture in which the solid particles are large (more than about 1000 nm) and remain spread through the liquid only for a while – for example, muddy water or chalk in water.
Because the particles are large and heavy, they settle down when the mixture is left undisturbed, so a suspension is unstable. The particles are also big enough to be held back by filter paper, so they can be separated by filtration.
Suspensions are not stable – they need stirring to keep particles spread; they are opaque or cloudy, not transparent like true solutions; and although their particles can scatter light, they do settle, unlike colloids.
Hence, the particles in a suspension settle over time and can be separated by filtration.
Similar Questions
Which method can best be used to confirm the presence of a colloidal mixture due to the Tyndall effect?
The process of settling down of colloidal particles by adding an electrolyte is called:
Which of the following statements best describes a property of a colloid in relation to mixtures and solutions?
Important Questions from Surface Chemistry
- What is the name of the effect seen when light is scattered by tiny particles in a colloidal solution?
- Which one of the following is not a colloid ?
The following item consists of two statements, Statement I and Statement II. Examine these two statements carefully and select the correct answer using the code given below :
Statement I : Catalytic hydrogenation is highest when the catalyst remains in the powdered form
Statement II : When a catalyst is in the powdered form, its surface area becomes highestOn adding some detergent to water, the surface tension
- The process by which a chemical change takes place in a substance when electric current is passed through it is called
