No. Mixtures can be a single phase, such as in the case of salt water. This is a homogeneous mixture. A heterogeneous mixture would have more than one phase.
yea because the component of mixture can be separate by physical methods like filtration.
An ice cube floating in water is a heterogeneous mixture with 2 phases (solid, liquid).
Heterogeneous mixtures are made up of more than one phase and they can be separated physically. The aforementioned chocolate chip cookie, a tossed salad, sand, and a bowl of raisin bran cereal are all examples of obvious heterogeneous mixtures.
Homogeneous mixtures are more difficult to separate than heterogeneous mixtures because the particles are all mixed together, whereas heterogeneous mixtures have particles big enough to see.
it is false as acid-base mixtures are neutral.
Mixtures that contain more than one pure substance in every sample of at least a few thousand molecules.
Not necessarily.
Gasoline is a mixtures so the is not particular molecules that can be identified as gasoline. But most of the components are denser than air even in the vapor phase.
The only real difference would be the inverter and panelboard, and yes, 3-phase inverters are more expensive than single-phase.
They have more than one material mixed in.
They are actually elements so that is pure substances. Mixtures are more than one type of element that are in the same space but not touching. Compounds are like mixtures but they are touching.
3 phase system has more power than a single phase system