What is BN? Important knowledge about BN.

Translate the following sentence from Vietnamese to English

Provide 5 examples [if any]

5. BN Applications
   List 5 practical applications of BN

6. BN Toxic Substances
   Is it toxic or not?
   Effects on the body; provide 5 examples [if any]

Example of water (H₂O):

1. Definition: Water, also known as dihydrogen monoxide, is a colorless, odorless, and tasteless liquid at room temperature. Water is composed of two hydrogen atoms and one oxygen atom, with a total atomic mass of 18. Water can exist in several states: liquid, gas (water vapor), and solid (ice).

2. Properties: Water is liquid at room temperature, colorless, odorless, and has a pH of approximately 7 when pure. Water has the ability to dissolve many inorganic and organic substances, known as polar substances.

3. Common chemical equations: H₂ + 1/2O₂ -> H₂O; H₂O + CO₂ -> H₂CO₃; 2H₂O2 → 2H₂O + O₂ -> .

4. Preparation: Water can be prepared through the combination of hydrogen and oxygen in air. In laboratories, water can be prepared from the chemical decomposition of hydrogen peroxide.

5. Applications: Water is widely used in daily life for drinking, cleaning, cooking, watering plants… It is also used in many industrial processes and chemical reactions.

6. Toxic substances: Pure water is not toxic but if contaminated can cause various health problems such as diarrhea, respiratory infections and even death.