 What is fog or mist, a sponge or butter have in common? Well, it's difficult to tell that right? Well, it turns out all of these substances, they are colloids. But they are so different from each other, right? So does that mean that there are some types of colloids? Well, it turns out yes, and in this video we will look at all different types of colloids that there can be and in this video we will look at many examples of colloids that we see around us. All right, so in order to understand different types of colloids, we need to understand the components of colloids. What makes up a colloid? And there are two components. There is dispersing phase, there is dispersing medium. Dispersing phase are the solute like particles, solute like particles that are dispersed in the dispersing medium. And dispersing medium is a component in which the dispersing phase is suspended. This is a component in which the dispersing phase is suspended. Now colloids, they are classified according to the state, solid, liquid and gas of both the dispersing phase and dispersing medium. So let's have a look at different types of colloids now. To begin with, let's say our dispersing phase is liquid. So we have the solute like particles that are that are dispersed in the medium are liquid. And let's say the dispersing medium itself is a gas. This is a case when we see, when we see fog or mist or even clouds. And this type, this type of colloid is called an aerosol. This type of colloid is called an aerosol. Examples are fog, you have mist, you have clouds. Now let's take the dispersing phase as solid. So the solute like particles are solid and dispersing medium is gas. In this case, what you get is smoke. You get smoke or exhaust fumes coming out from trains or cars. And this type of colloid is also called an aerosol. So you have examples like smoke or exhaust, automobile exhaust, the exhaust fumes. Now let's take the dispersed phase as gas. So you have gas like solute particles and dispersing medium is liquid. In this case, what you get is something like a shaving cream. Get something like a shaving cream. And this, the type of colloid, this type of colloid is called foam. This is foam. Example is a shaving cream. Now let's take the dispersing phase as liquid. And dispersing medium as liquid. Example of this would be milk. Milk is an example of this. And this type of colloid is called an emulsion. So milk is an emulsion. One more example can be, can be face cream. Face cream can be some other example. Now let's take dispersing phase as solid. This is solid and dispersing medium as liquid. Example of this can be mud. And this type of colloid is called a sol. It's called SOL sol. Example is mud. Now let's take dispersing phase as gas and dispersing medium as solid. In this case, you can think about, think about what can you get in this case. So the solute like particles, they are really gas. So there can be many air spaces and dispersing medium is a solid. So there can be many air spaces in between a solid. What kind of a substance can this be? So turns out this is a, this is a sponge, right? You have these air spaces in between all the solid over here. And this is, the type is really called a foam. And you have examples like sponge, even, even rubber. Rubber is also an example. Now let's, let's continue. Let's continue and now the dispersing phase is liquid. This is now liquid and dispersing medium is a solid. Here you can get substances like butter or jelly and this is called a gel. You can get butter, you can get jelly. Finally, let's take the dispersing phase as solid and dispersing medium as solid. So what you get in this case is very interesting. You get, you get something like a gemstone. You get a gemstone. So you have solid solute like particles suspended in a solid medium. What you get are gemstones. And the type of colloid is called a solid sol, solid sol. You had mud under solace well when the dispersing medium was liquid because mud is slightly watery, right? All right. So these are all different types of colloids that you can see around you.