1 / 14

ONLINE TREASURE HUNT ON ACIDS AND BASES

ONLINE TREASURE HUNT ON ACIDS AND BASES. By: Jeff Nathan Sale Lanz Banzuelo. 1. What are the physical and chemical behavior of acids and bases?. Acids have a sour taste have pHs of less than 7 turn blue litmus paper to red soluble in water Corrosive ('burns' your skin )

yon
Download Presentation

ONLINE TREASURE HUNT ON ACIDS AND BASES

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ONLINE TREASURE HUNT ON ACIDS AND BASES By: Jeff Nathan Sale LanzBanzuelo

  2. 1. What are the physical and chemical behavior of acids and bases?

  3. Acids • have a sour taste • have pHs of less than 7 • turn blue litmus paper to red • soluble in water • Corrosive ('burns' your skin) • Reacts with bases to form salt and water • Reacts with metals to form hydrogen gas

  4. Bases • have a bitter taste • corrosive ('burns' your skin) • soapy feel • has a pH more than 7 • reacts with acids to form salt and water • turns red litmus paper to a blue color

  5. 2. How do we differentiate an acid from a base?

  6. We can differentiate acids from bases by physical properties, acids are sour in taste and can burn or destroy substances they come in contact with. They leave a stinging effect on mucous membranes. Bases, on the other hand, taste bitter and have a soapy or slippery texture. • An acid , is usually a substance that contains hydrogen and has a pH value of less than seven. The hydrogen can be replaced by a metal to form a salt. Base on the other hand, contains hydroxide and has a pH value of more than 7 and it usually combines with an acid to form a salt.

  7. 3. How are the strength of acids and bases identified?

  8. The strength of acids depend on the concentration of ionized Hydrogens, while for bases, this is determined by the completeness of the ionization into hydroxide and anions.

  9. 4. How are acids and bases quantified?

  10. Acid and base strength are quantified with the pH scale, which is one way to express the acidity or alkalinity of a solution without using cumbersome numbers. The term pH is derived from the French for the "power of hydrogen." The power aspect comes from the fact that the pH scale is based on powers of 10. The formula for determining the pH value is pH = log[H + ]. Since pH is a logarithmic scale based on powers of 10, a pH change of 1 unit means a 10fold change in the concentration of hydrogen ions.

  11. 5. What are pH indicators?

  12. A pH indicator is a halochromic chemical compound that is added in small amounts to a solution so that the pH (acidity or basicity) of the solution can be determined visually.

  13. 6. What are common applications/uses of acids and bases?

  14. In our daily lives we deal with acids, for example Lactic acids, it is commonly found in sour milk, citric acids in citrus fruits, and these juices contains ascorbic acid, or commonly known as Vitamin C. Some examples of bases are baking soda, antacids, and lye. Acids an bases are also used in other purposes like cleaning surfaces, refining oil and sugar, and treating food products.

More Related