Examples of acids include vinegar, citrus fruits, tomato juice, black coffee, bananas, milk, sulfuric acid, battery acid and hydrochloric acid, which is a digestive compound found in the stomach. Acids are ionic compounds made up of positively and negatively charged ions that separate in water to form hydrogen ions.Know More
The concentration of hydrogen ions in an acidic solution determines its strength. The more hydrogen ions present, the stronger the acid. Acids have some similar characteristics and behaviors. They typically taste sour, and strong acids are highly reactive with metals.
The strength of an acid, or its level of acidity, is measured by using the pH scale. This is a method used to determine the concentration of hydrogen atoms relative to pure water. The scale ranges from 0 to 14, and each number represents a ten-fold change in hydrogen ion concentration. Pure water has a pH of 7, meaning it is neither acidic or basic. Any substance that has a pH below 7 is considered an acid. A basic substance is one that absorbs hydrogen ions instead of losing them like acids. When a base is dissolved in water, it is called an alkaline solution. Any substance with a pH measurement above 7 is considered a base.Learn more about Chemistry
Examples of facilitated diffusion are the passing of K+ ions through a membrane with an aid of a potassium transport protein and the passing of glucose and amino acids with the aid of proteins called permeases. Retinol binding protein acts as a water-soluble carrier for retinol and fatty acids.Full Answer >
Examples of diffusion include the dispersion of tea in hot water and smoke from a lit cigarette spreading in the air. Carbon dioxide bubbles diffusing from an opened bottle of soda cause the soda to become flat as it loses its carbonation.Full Answer >
Examples of chemical changes include burning of wood, digestion of sugar, an exploding firecracker, reactions between salts and acids and lighting a matchstick. A chemical change involves changes at the atomic and molecular level.Full Answer >
Common household substances that are acidic include coffee, battery acid, vinegar and lemon juice, while common household substances that are basic include drain cleaner, bleach, soap, ammonia, milk of magnesia and baking soda. An acid is a substance that has a pH value of less than seven, while a base is a substance that has a pH value of greater than seven.Full Answer >