which of the following observations would indicate that a material is a pure substance? it does not dissolve…

which of the following observations would indicate that a material is a pure substance? it does not dissolve in water. it changes color after heating. it cannot be physically broken down into different types of atoms. it can be physically broken down into different types of molecules.

which of the following observations would indicate that a material is a pure substance? it does not dissolve in water. it changes color after heating. it cannot be physically broken down into different types of atoms. it can be physically broken down into different types of molecules.

Answer

Brief Explanations:

A pure substance is either an element (made of one - type of atom) or a compound (made of one - type of molecule). It cannot be physically broken down into different types of atoms. Not dissolving in water or changing color on heating doesn't define purity. Being able to be broken down into different types of molecules indicates a mixture.

Answer:

It cannot be physically broken down into different types of atoms.