A very large number of chemical substances might be used for destroying bacteria or preventing their growth either through direct injurious action or by the effect of concentration.
Also it is best to secure the chemical substances used as such and not depend on patented mixtures purporting to contain them.
Smell is like taste in that it is aroused by chemical substances, but to be smelled these must be in gaseous form, not dissolved in water, as for taste.
This regulation is present in the form of chemical substances.
Such attraction is called chemotropism and is supposed to be due in the cases mentioned, to the action of chemical substances such as are given off by the bacteria or the dead cells.
It is known that active growth of the cells of the body can be excited in a number of ways, by chemical substances such as certain of the coal tar products, and that it often takes place under the influence of bacteria.
At about the same time also chemotaxis, or the action of chemical substances in attracting or repelling organisms, excited attention, and all these facts together became woven into the theory.
And then she told of the manner in which the hair of her Twins had been permanently colored by some of her husband's Chemical Substances.
Her husband was a very remarkable man, a dealer in Chemical Substances.
We need not explain what that question would have been, for any one could guess that it would have been in regard to Chemical Substances.
Chemical substances, perfect filtration, and heat are the three means at our command in order to secure germ-free conditions of apparatus or medium.
A dozen other methods have been tried, but all based on the addition of chemical substances to precipitate or change the organic matter of the sewage.
They are also greatly affected by the addition of minute quantities of chemical substances either to the gelatinous blastema or to the drops which represent the primary nuclei.
We have been able to make these periodic precipitates by the reaction of a great number of chemical substances, giving a bewildering variety of form and structure.
Berzelius, we saw, greatly improved the methods whereby atomic weights could be determined, and he recognized the importance of physical generalizations as aids in finding the atomic weights of chemical substances.
The older view of acid and alkali was based, for the most part, on a qualitative study of the reactions of chemical substances: bodies were placed in the same class because they were all sour, or all turned vegetable blues to red, etc.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "chemical substances" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
