Which statement explains a difference between a homogeneous mixture and a heterogeneous mixture? A homogeneous mixture looks the same throughout, whereas a heterogeneous mixture does not have uniform composition.

A heterogeneous mixture can be referred to as a solution and a homogeneous mixture cannot.

A homogeneous mixture does not have uniform composition, whereas a heterogeneous mixture does.

A heterogeneous mixture can be separated by physical means, and a homogeneous mixture must be separated chemically.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

What extra step distinguishes fermentation from glycolysis

The allotropes of carbon include a variety of structures that include three-dimensional tetrahedral lattices, planes of hexagonal rings, cylindrical tubes of hexagonal rings, and spheres of five- and six-membered rings. similar shapes of network covalent atomic solids are possible with carbon nitride, boron, and pure silicon (e. g., silicene is a graphene-like allotrope of pure silicon). in contrast, silicates exist as either highly ordered or amorphous (more random) three-dimensional lattices. what could explain why there are there no naturally occurring sheets, stacked sheets, cylindrical tubes, or spheres of network covalent atomic solids composed of silicon and oxygen (sio2)? would pure silicate structures make good lubricants or good electrical conductors?