Key notes on the chemistry of cell. A living system has three important attributes-matter, energy and genetic information. We can conceive of a living cell as a self-as-sembling, self-adjusting, self-regulating and self-perpetuating isothermal open system that exchanges...
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Chemists constantly experiment and prepare new substances for use in daily life. The list of the practical uses of chemistry is endless. All aspects of our life— food, clothing, shelter, hygiene, health, transportation, lighting, heating, entertainment, etc, are influenced by chemistry. A few examples are as follows.
The scientific method consists of the systematic steps taken to solve problems. The scientific method consists of a. identifying the problem, b, collecting information, c. hypothesis, d. carrying out experiments to test the hypothesis, e. forming a theory on the basis of the hypothesis, and f. applying the theory.
Grouping together of matter with similar properties is called classification. Classification makes the study of matter easy, systematic and more scientific. Elements and compounds are pure substances. Mixtures are impure substances.
This method is also called trial and error method, or inspection method. In this method, coefficient before the formulae or symbols of the reactants and products are adjusted in such a way that the total number of atoms of each element only both the sides become equal.
A homogeneous mixture of two or more substances is called a solution. Homogeneous means physically and chemically uniform throughout. For example..