Each second, your brain experiences about 100,000 chemical reactions.
Life on earth probably began with simple chemical reactions that occurred naturally.
Life on earth probably began with simple chemical reactions that happened naturally.
At least 100,000 different chemical reactions occur in the normal human brain every second.
Researchers now believe that smoking cigarettes produces chemical reactions in the brain which lead to reinforcing effects.
reject The adsorbed ion has no chemical reaction with the atoms of the electrode.
Fuel cell converts chemical energy into electrical energy by a chemical reaction with oxidizing agent .
The light comes from chemical reactions in the algal cells.