A mixture of iron and sulfur can be separated by attracting the iron particles with a magnet. If the iron and sulfur mixture is heated strongly, iron (II) sulfide forms. Iron (II) sulfide is no longer magnetic, and cannot be separated by physical methods. What is iron (II) sulfide? A element B compound C homogenous mixture D heterogeneous mixture 56 Which is one way a chemical property can be witnessed? A heating a substance to its boiling point B examining a substance under a microscope C passing an electrical current through a substance D observing how one substance interacts with another

Answer 1

Iron (II) sulfide is classified as a B) compound. It is formed from the chemical reaction between iron and sulfur, resulting in a new substance with different properties from its constituent elements.

As for the second question, one way a chemical property can be witnessed is D) observing how one substance interacts with another. This involves watching reactions and changes that occur when substances are combined, which is indicative of their chemical properties.