In a beaker, you get a mixture of items: water, salt, soil, and iron filings(small pieces of iron). Create a plan to separate these 4 items so they are no longer a mixture. Methods of Separation:Separation: Magnets, Filtration, Evaporation, Distillation, Chromatography?

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

What state of matter is ice a. liquid b. element c. solid d. gas

Which of the following is true about the speed of light? it depends on the wavelength.