A compound or material formed by a chemical reaction is know as the of the reaction

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.

Describe the interaction that occurs between two objects with the same electrical charge.

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa