There is more to chemistry than the periodic table of elements. Chemistry is the science of matter; the composition, properties, structure of particles that make up our world. It is also concerned with how substances react with each other. Chemistry is particularly special because it links physics with the natural sciences like biology and geology. Whether you are interested going into the biomedical field or fossil excavation, you are going to want a strong foundation in chemistry.
Interestingly, this cutting edge science was pioneered by the Ancient Egyptians. Long before the Common Era, humans were using the basic concepts of chemistry to make pottery, produce beer and wine, extracting pigments and chemicals from plants, making glass, and producing alloys. This shows just how much of our life depends on chemical reactions. We might not be thinking about molecules and compounds, but we are experiencing the benefits of them every day
Chemical reactions, the interesting part of chemistry, are when a substance is drastically transformed as a result of interacting with another substance or some form of energy. They usually involved either the breaking or creating of chemical bonds. All chemical reactions can be symbolically displayed through a chemical equation. Oxidation, molecule rearrangement and dissociation are some of the basic chemical reactions that can be observed.
Since reactions play such an integral role in the study of chemistry, there are many complicated laws governing how chemical reactions take place. Some of the foundational laws of chemistry include (http://en.wikipedia.org/wiki/Chemistry) :
- Avogadro's law
- Beer-Lambert law
- Boyle's law (1662, relating pressure and volume)
- Charles's law (1787, relating volume and temperature)
- Fick's law of diffusion
- Gay-Lussac's law (1809, relating pressure and temperature)
- Le Chatelier's Principle
- Henry's law
- Hess's Law
- Law of conservation of energy leads to the important concepts of equilibrium, thermodynamics, and kinetics.
- Law of conservation of mass continues to be conserved in isolated systems, even in modern physics. However, special relativity shows that due to mass-energy equivalence, whenever non-material "energy" (heat, light, kinetic energy) is removed from a non-isolated system, some mass will be lost with it. High energy loses result in loss of weighable amounts of mass, an important topic in nuclear chemistry.
- Law of definite composition, although in many systems (notably biomacromolecules and minerals) the ratios tend to require large numbers, and are frequently represented as a fraction.
- Law of multiple proportions
- Raoult's Law
With atomic numbers, electron shells, energies, charges, and laws to worry about, chemistry can be a tedious subject to study for and learn. Even the best chemists can get lost in a complex chemical equation. If you are taking a chemistry class in high school and studying for that molecular cell biochemistry class for you premed degree, you can find a private tutor that can help you study for your next chemistry exam. If you find yourself struggling in any aspect of chemistry, look through the listings below to find a tutor that meets your chemistry needs.
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