If you could answer it would be a huge , you!

A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions .

It is a homogeneous mixture since the components of tap water are blended so that it looks like a single substance, since you only see water and nothing else.

(Heterogenous mixtures are mixtures in which the separate components that make up the substance are visible .)

It is homogeneous too ...

1. A mixture is a material made up of two or more different substances which are physically combined.A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspension and colloids.

2. Tap water is a homogeneous mixture, not heterogeneous. This is because tap water has dissolved minerals inside it, but they are equally distributed throughout the water.

3. 70% rubbing alcohol means that 70% of the molecules in the rubbing alcohol is actually alcohol. The other 30% is water. As I have stated at the start the answer, although alcohol is technically pure, rubbing alcohol is not purely made of alcohol.