All the following are signs of a chemical reaction, except

a. a change in color or odor.
b. a release of gas.
c. a change of state.
d. a change in energy.

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

What will most likely happen when two bromine atoms bond together?