select all the true statements. two different substances with crystal structures can be composed of the same…

select all the true statements. two different substances with crystal structures can be composed of the same chemical elements in the same ratio and also have the same arrangements of atoms. molecules of two different substances can be composed of the same chemical elements but have different numbers of atoms. two different substances can be composed of different chemical elements.

select all the true statements. two different substances with crystal structures can be composed of the same chemical elements in the same ratio and also have the same arrangements of atoms. molecules of two different substances can be composed of the same chemical elements but have different numbers of atoms. two different substances can be composed of different chemical elements.

Answer

Brief Explanations:

  • Isomers are substances with same - element composition and ratio but different structures, so the first statement is false.
  • For example, carbon monoxide (CO) and carbon dioxide (CO₂) are composed of carbon and oxygen but have different atom - counts, making the second statement true.
  • Different substances like oxygen (O₂) and iron (Fe) are made of different elements, so the third statement is true.

Answer:

Molecules of two different substances can be composed of the same chemical elements but have different numbers of atoms. Two different substances can be composed of different chemical elements.