Final answer:
Bases are compounds that turn litmus blue and are often found in soaps and detergents. One common example of a base is sodium hydroxide, which produces hydroxide ions when dissolved in water.
Step-by-step explanation:
Bases are compounds that turn litmus blue and are often found in soaps and detergents. One common example of a base is sodium hydroxide, which produces hydroxide ions when dissolved in water. Bases change the color of indicators, such as litmus and phenolphthalein, with litmus turning blue and phenolphthalein turning pink. Bases also react with acids to produce a salt and water.