The diagram below shows a laboratory setup. In the diagram, flask A contains a mixture of two liquids. This flask is being heated, which is causing alcohol in the mixture to evaporate and recondense into flask B. Flask B contains pure liquid alcohol. What does this demonstrate? A. Mixtures form when pure substances chemically react to form new substances. B. Liquids must be heated until both substances are gases in order for a mixture to form. C. Mixtures can be separated into their component parts through physical processes like boiling. D. Liquids can only form mixtures with other liquids.

The earth's moon is unusually large. two popular theories of the moon's origin include the "sister world" hypothesis, which states that the moon formed from the same materials as the earth, near enough to the earth that they fell into orbit around each other. a second theory is the "capture" hypothesis, in which the moon formed elsewhere in the solar system, and the earth's gravity pulled it into its orbit. studies of what the moon is made of indicate that some of its materials had to come from the earth or from the same area of the solar system where the earth had formed. at the same time, the moon does not contain much of the material that makes up the earth's core, so the moon could not have formed from the same materials as the earth. how do the two facts above affect the described theories of the moon's origin? a. they show that scientists will never agree on where the moon came from. b. they show that more experiments on moon formation need to be done. c. they show that no theory accounts for the existence of the moon. d. they show that neither theory is complete and entirely correct.

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

Why is the structure of molecule important to its function?