Achemical change occurs when a. dissolved minerals freeze to form a crystal. b. ethanol is purified through distillation. c. salt deposits form from evaporated sea water. d. a leaf changes color from green to red.

The first element on the periodic table of elements is carbon. a. true b. false

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms