Learn Unit XVI: Chemistry in Everyday life with Free Lessons & Tips

Disinfectants vs. Antiseptics:

• Disinfectants are chemical agents used to kill or inhibit the growth of microorganisms on inanimate surfaces or objects.
• Antiseptics are chemical agents applied to living tissues to kill or inhibit the growth of microorganisms, thereby preventing infection.

Need for Artificial Sweetening Agents: Artificial sweetening agents are required to provide sweetness to foods and beverages without adding significant calories. They are used as sugar substitutes, particularly in products intended for individuals with diabetes or those trying to control their calorie intake.

Cleaning Action of Soap: Soaps function by forming micelles in water, with hydrophobic tails oriented inward and hydrophilic heads oriented outward. This arrangement allows the hydrophobic tails to trap dirt and grease, while the hydrophilic heads interact with water to facilitate rinsing. Soaps form insoluble salts with calcium and magnesium ions present in hard water, leading to the formation of soap scum and reducing their cleaning effectiveness.

Analgesic Medicines: Analgesic medicines are pain-relieving medications commonly used to alleviate mild to moderate pain. They are classified into non-opioid analgesics (e.g., acetaminophen, ibuprofen) and opioid analgesics (e.g., morphine, codeine). They are recommended for use in conditions such as headaches, muscle aches, and mild injuries.