In the following diagrams, the spheres represent particles. Different shadings represent different particles. Which of the following contains only one pure substance?

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat