A catalyst is a substance which alters the velocity of a chemical reaction without appearing in the final products. — Wolfgang Ostwald Copy Share Image
The chemists work with inaccurate and poor measuring services, but they employ very good materials. The physicists, on the other hand, use excellent methods… — Wolfgang Ostwald Copy Share
The only difference between elements and compounds consists in the supposed impossibility of proving the so-called elements to be compounds. — Wolfgang Ostwald Copy Share
What we call matter is only a complex of energies which we find together in the same place. — Wolfgang Ostwald Copy Share
A catalyst is a substance which alters the velocity of a chemical reaction without appearing in the final products. — Wolfgang Ostwald Copy Share
