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Kelly has a sample of an unknown substance which properties of the substance will be the same no matter how large or small her sample is and we have a melting point solubility conductivity bowling point mass and density would the answer be all of these melting point bowling point and mass only or melting point boiling point conductivity and density only or would it be melting point bowling point conductivity, solubility and density only

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The properties of a substance that remain the same regardless of the size of the sample are known as intensive properties. Intensive properties do not depend on the amount of substance present.

From your list, the intensive properties are:

  1. Melting Point - This is characteristic of the substance.
  2. Boiling Point - This is also characteristic of the substance.
  3. Conductivity - This property is generally intensive and is also characteristic of the substance.
  4. Solubility - This is typically considered an intensive property.
  5. Density - This is an intensive property as well.

In contrast, mass is an extensive property, meaning it does depend on the amount of substance.

Therefore, the correct option would include melting point, boiling point, conductivity, solubility, and density.

So the answer is: melting point, boiling point, conductivity, solubility, and density only.