INTRODUCTIONAcids and bases have always challenged me throughout the years I have learned them, so when I have learned, I will approach again This topic, I thought it would be the best idea for a learning experience. So it's better that my goal for this project is to learn the fundamentals of this subject. Acids and bases are really important in how cells function. The majority of them are harmful and destroy tissues by dissolving proteins. For example, sulfuric acid is a strong acid and it has the ability to retain water. Therefore, if it is poured onto living tissue, it will be immediately destroyed. Aqueous solutions of bases react with fats in the cell membrane, making bases more devastating to the body than acids. Aqueous solutions of acids and bases conduct electricity. Acids taste sour, bases taste bitter, and bases are slippery. The strength of an acid or base depends on its ionization rate. Strong acids and bases are completely ionized, so they have a pH or pOH of 1, weak bases and acids do not ionize completely, so they have a pH or pOH of 3 to 5. Acid Theories and bases Until today, acids and bases are defined in different ways. but the first modern description was made by the Swedish scientist Svonte ARHENIUS in 1884. He said: “Aqueous solutions of acids give the H+ ion. For example: NaOH → Na++ OH− and Aqueous solutions of bases give OH- ions for example NaOH → Na++ OH− The second description of acids and bases is found by the Danish chemist JN Bronsted and the English chemist in TN LOWRY in 1923. According to them, the matter which gives protons is acidic and the matter which receives protons is base. With this description, materials that are not considered an acid or base are now classified as acids or bases. For example, boron trifluoride acts as an acid and a paper medium. The first titration is a neutralization reaction. In an acid-base titration solution with no known molarity, it is placed in an Erlenmeyer flask after its volume is measured. An indicator is added to the solution most of the time it is phenolphthalein. The solution of known concentration is placed in a burette fitted with a tap at the end. By slightly opening the tap, the solution contained in the burette is poured drop by drop into the solution contained in the Erlenmeyer flask. After a while, the Erlenmeyer solution changes color. This is the turning point of the solution. As the volume consumed in the burette changes, the molarity of the other solution can be reduced.IndicatorsIndicators are substances that change color depending on the acidic and basic properties of their environment. There are many different indicators that show different pH levels and some are listed beyond the table..