Which statement best compares and contrasts two physical properties of matter? density and solubility are similar because they both involve water, but they are different because density involves dissolving a material and solubility involves floating or sinking a material. density and solubility are similar because they both involve a material’s mass and volume, but they are different because density involves floating materials and solubility involves sinking materials. boiling points and melting points are similar because they both involve changing the heat of a material, but they are different because boiling point involves adding heat to a material and melting point involves removing heat from a material. boiling points and melting points are similar because they both involve the change in a state of a material, but they are different because boiling point involves a change from a liquid to a gas and melting point involves a change from a solid to a liquid.

 Boiling points and melting points are similar because they both involve the change in a state of a material, but they are different because boiling point involves a change from a liquid to a gas and melting point involves a change from a solid to a liquid.

Explanation:

Physical properties are those properties which involve changes in state and no change in chemical composition takes place.

Density is a physical property which measures the degree of compactness of a body.A more dense material will sink in a lesser dense material and vice versa.

.

Solubility is defined as the the amount of solute dissolved in a given amount of solvent at given temperature.

Boiling point is a point at which liquid starts changing into gaseous phase and thus the state of a substance changes. Melting point is a point at which solid starts changing into liquid phase and thus the state of a substance changes.

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.