Select all the ways in which two substances can be different.

Question

Two substances can be composed of the same chemical elements, but the substances can have crystal structures with atoms that are arranged differently.
Two substances can be composed of different chemical elements.
Two substances can be composed of molecules that contain the same chemical elements but have different numbers of atoms of each element.
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Answer 1

The ways in which two substances can be different include:

1. Different Chemical Elements: Two substances can be composed of different chemical elements.

2. Different Crystal Structures: Two substances can be composed of the same chemical elements, but the substances can have different crystal structures with atoms arranged differently.

3. Different Molecular Compositions: Two substances can be composed of molecules that contain the same chemical elements but have different numbers of atoms of each element.

In summary, the differences can arise from variations in chemical composition, molecular structure, or atomic arrangement.