My friend told that toothpaste is an example for plasma state and it is because it is a semi solid.He said all semi solids are plasma
This is categorically false.
One would need extensive dental work after attempting to brush one's teeth with a plasma.
This is absolutely wrong, toothpastes are not in plasma state. so what are toothpastes? A simple answer is; toothpastes are either pastes or gels. They are not solution because solute is not dissolved in the solvent. They are not suspensions because of ultra-high cocentration. So toothpastes are emulsions (two phased mixture). Toothpastes comprise an oil-water emulsion. And this form is used to stabilize the primary components of the toothpaste.
- antiseptic/bacteriocidal component: this is contained in the aqueous phase of low viscosity it is capable of penetrating into the hollows of the teeth and gaps in the gums.
- hydrogen peroxide part which is stabilized in the hydrophobic part of the emulsion.