Classify the following as an element or compound or homogenous mixture or heterogeneous mixture 10 points to who ever helps. SodiumConcreteSodium chlorideRust (iron oxide)PennyOrange juiceHydrochloric acidGranola barCarbon dioxideGlass AirWaterSoda CopperMercuryTossed saladIce creamBloodOcean waterSalad dressing
Start by looking up a periodic table of elements. Anything on your list that's on there is an element. Homogeneous mixtures mean everything is there in the same amounts everywhere - you don't have bits of other things.