Hello world

The alloy in which first metal is mercury, that alloy is known as amalgam. Uses: Dental amalgam is a mixture of mercury and a silver-tin alloy and is used for fillings in teeth. Amalgam fillings are often known as "silver fillings." Dental amalgam is a mixture of mercury, silver, tin and copper. Mercury, which makes up about 50% of the compound, binds the metals together to provide a strong, durable filling.

Baking soda is a chemical compound which is also called as - Sodium bicarbonate (NaHCO,). 1. Antacid / medicine - NaHCO, acts like an absorbable antacid. Baking soda imitates the action of natural sodium bicarbonate in the body and neutralizes the stomach acid relieving acid reflux. 2. Food/ Baking - When baking soda is mixed with moisture and with an acidic substance like yogurt, buttermilk etc, a chemical reaction occurs which produces carbon dioxide gas as bubbles. These bubbles expand under hot temperatures like in the oven while it is baking. This causes the baked bread or cake to become soft and spongy. 3. Soda-acid fire extinguisher - A soda-acid fire extinguisher is usually a mixture of baking soda and an acid which is commonly sulfuric acid. It is used as a pressurized expeller to put off the fire. When it is expelled, a reaction in between the contents of the soda-acid occurs which releases carbon dioxide that extinguishes the fire.