Experiments with cathode rays led to the discovery of the a neutron. b proton. c electron. d nucleus.

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 does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.