The skin regulate your body .temperaturem, color, movement, senses

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?