Traditionally bases have a bitter taste while acids are sour, but in chemistry, the definitions have evolved so that substances are either bases or acids using their chemical properties. This classification is important because acids and bases can react to form salts, and they are the basis of ...
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chem =chemical; chemist; chemistry chemical 释义 1. 化学的 化学上的 化学用的 He devoted his life to chemical research. 他一生从事化学研究。 n. 1. 化学制品;化学药品[C][P1] He is experimenting with a new chemical. 他正在实验一种新的化学制品。 chemical 反义参见: physical ...
If we open a dictionary, an encyclopedia, or a school book, we shall find a definition of chemistry, tracing the word back to the Arabs and utterly confounding us with the profound knowledge of tho learned pundits who have endeavored to enlighten the world on the (subject. Somehow, after ...
In chemistry, there is a term called smelting. What is smelting? What is cracking in chemistry? In chemistry, what is an osmole? Which metal can be obtained form the ore by heating alone? Why iron smelting is a physical process? Which is the most important ore of extracted aluminium as...
What is chemistry in simple words? Chemistry is the study of the substances that make up our world (matter and energy). This includes everything from the shape of the water molecules that we drink to the manufacturing of chemical fertilizers that help us grow food.What...
Chemistry is a science that tries to understand the properties of substances and the changes that substances undergo. It is concerned with the substances that occur in nature-the minerals of the earth,the gases of the air,the water and salts of the seas,the chemicals of the living creatures,...