sodium bicarbonate; used in cooking, medicine, and fire extinguishers; also known as [[碳酸氢钠|碳酸氫鈉|tan4 suan1 qing1 na4]]

baking soda; sodium bicarbonate

an inorganic compound (sodium thiosulfate) used as a photographic fixer and a bleaching agent

soda water; carbonated water; soda drink

soda cracker or saltine cracker

soda cracker; a crisp biscuit baked with baking soda, often salty in flavor

sodium hydroxide, a strong alkaline compound used in various industrial processes