An ordered list of chemical substances is shown. Chemical Substances
1CuO
2O2
3CO2
4NO2
5Fe
6H2O
Which substances in the list can be some of the reactants and products in the same combustion reaction? (4 points)

a
1, 2, and 3

b
2, 3, and 6

c
1, 4, and 5

d
1, 2, and 5

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