Which is the best description of what happens in a chemical reaction? a. atoms rearrange. b. atoms change into other atoms. c. matter is destroyed. d. matter is formed.

Which statement describes james chadwick’s discovery.

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)

Wind and moving water provide energy. chemical mechanical thermal none of the above