The pH carapace was invented by a biochemist named Soren Sorensen in 1909. The pH scale is used to measure the sulfurousity of piths. The scale has range from zero to 14; the closer a marrow is to zero on the pH scale, the more acerbic the substance is. The closer a substance is to 14 on the pH scale, the more basic the substance is. Substances that have a pH level of seven be considered to a neutral, neither vinegarishic nor basic.
H+ ions. OH- ions.
An Acid is a solution that has too many another(prenominal) H+ ions. Bases are solutions that have too many OH- ions. inviolable acids are known as having low pH levels on the pH scale, between 0-6 on the pH scale. Strong bases are known as having high pH levels, usually between 8 and 14 on the pH scale. Weak acids and puny bases have pH levels close to the middle of the pH scale; seven is considered neutral.
Properties of Acids ? ? ? ? ? Taste sour (dont taste them!)...
the word acid comes from the Latin acere, which means sour acids change litmus test (a unsanctified vegetable dye) from bluing to red their aqueous (water) solutions conduct electric current (are electrolytes) defend with bases to system salts and water evolve hydrogen gas (H2) upon chemical reaction with an active metal (such as alkali metals, alkaline creation metals, zinc, aluminum) Properties of Bases ? ? ? ? Taste bitter (dont taste them!) Feel slippery or soapy (dont arbitrarily touch them!) bases dont change the color of litmus; they can turn red (acidified) litmus back to blue their aqueous (water) solutions conduct and electric current (are electrolytes)
? React with acids to form salts and water Examples of car park Bases ? ? ? ? detergents soap lye (NaOH) household ammonia (aqueous)
Examples of Common Acids ? ? ? ? ? citric acid (from certain fruits and veggies, notably citrus fruits) ascorbic acid (vitamin C, as from certain fruits) vinegar (5% acetic acid) carbonic acid (for carbonation of soft drinks) lactic acid (in buttermilk)
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