The molecular level explained simply

Explain the molecular level in inorganic chemistry

• Chemical substances occur in different aggregate states and consist of tiny particles, the atoms.
• The English chemist John Dalton developed a model of the atom. The molecular level could thus be represented more easily in chemical reactions, so that you get a more precise idea of ​​the structure of substances.
• In the Dalton atomic model, you think of the atoms as small, immutable spheres that are all the same for one element.
• Note that the atoms of different elements differ in size and mass.
• Remember that at the molecular level, the atoms are not destroyed or re-formed in a chemical reaction, but are separated and reconnected.


Reaction equation of lactic acid fermentation - this is how the chemical reaction works

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Have you ever had sore muscles? Then you have become a victim of lactic acid fermentation. …

• In the model presentation, only the particles of the noble gases are individual atoms. As you know from chemistry class, all other gaseous elements, such as oxygen, are made up of O₂, from molecules that are composed of two connected atoms.
• Note that all gaseous and liquid compounds are also molecules made up of different atoms of different compounds.
• Understand the molecular level of organic chemistry, it is not difficult for you to explain the law of conservation of mass: "The mass of the starting materials in a chemical reaction is equal to the mass of the reaction products."
• You can buy different molecular kits in stores. Inside there are balls of different sizes and colors that represent the atoms. In order to create models of molecules, the spheres are put together with rods, springs or push buttons.

Recognize model concept within biochemistry

• Processes in a cell can be explained by the molecular level. As an example, a muscle cell should show the chemical processes involved in muscle contraction.
• Stretching or bending your arm is used for muscle work energy needed. The adenosine triphosphate (ATP) stored in the muscle is used for this.
• Remember that the ATP in your muscle is converted into adenosine diphosphate (ADP) and a free phosphate is split off.
• If there is not enough ATP in your muscle, the supply can be temporarily supplemented with the creatine phosphate stored in the muscle.
• Note that in the long term the ATP supply is filled by the breakdown of glycogen into glucose.
• If you do long or heavy physical activity, your muscles will become oxygen starved. The pyruvic acid, which is made from glucose, "burns" to lactic acid, with much less energy being released. You get sore muscles.
• Your body needs ATP for any energy production. This is illustrated by the molecular level of the muscle cell.