1 / 15

Review Quiz and Introduction to Acids/Bases/pH Scale

Acids and Bases and pH. Review Quiz and Introduction to Acids/Bases/pH Scale. Review. 1. What is an ion? 1. An ion is an atom that has lost or gained an electron 2. What is a chemical reaction? Click Here to See a Chemical Reaction

prem
Download Presentation

Review Quiz and Introduction to Acids/Bases/pH Scale

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. Acids and Bases and pH Review Quiz and Introduction to Acids/Bases/pH Scale

  2. Review 1. What is an ion? 1. An ion is an atom that has lost or gained an electron 2. What is a chemical reaction? Click Here to See a Chemical Reaction 2. A chemical reaction is the process by which one or more substances change to produce one or more different substances 3. What is a cation? 3. A cation is a positively charged ion 4. What is a Chemical Equation 4. A shorthand of a chemical reaction using chemical formulas and symbols Ex: C+O2CO2 reactants products 5. What is an anion 5. An anion is a negatively charged ion

  3. Need extra help? • Go to Chemistry tutorials at http://www.wwnorton.com/chemistry/home.htm • Go to the online text at http://my.hrw.com • Go to the class website at www.classhomework.com Back

  4. Acids and Bases An Introduction

  5. Acids Reaction: • Produce H+ (as H3O+) ions in water • Acids contain H+ cations, that react with metals and produce H gas. • HCl + Na = NaCl + H(g) • Acid + Metal = Product + H Gas

  6. Acids Properties: • Acids taste sour. • Acids turn Litmus paper RED • Corrode metals • React with bases to form salts and water

  7. Bases Reaction: • Bases contain an OH- anion, that react with acids, producing liquid H2O. • HCl + NaOH = H2O + NaCl • Acid + Base = Water + Product See movie (on hardrive) on the Internet

  8. Bases Properties: • Bases taste bitter. • Bases feel slippery. • Bases turn Litmus paper BLUE. • Produce OH- ions in water • Taste bitter, chalky • Are electrolytes • React with acids to form salts and water

  9. Check for UnderstandingPost your answers on the class newsgroup. Describe the solution in each of the following as: 1) acid 2) base or 3)neutral. A. ___soda B. ___soap C. ___coffee D. ___ wine E. ___ water F. ___ grapefruit

  10. Check for Understanding Answers: Describe each solution as: 1) acid 2) base or 3) neutral. A. _1_ soda B. _2_ soap C. _1_ coffee D. _1_ wine E. _3_ water F. _1_ grapefruit Need Help

  11. Acids: HCl In your tummy! Human Digestive Acid C6H8O7 Citric Acid (Lemon) C2H4O2 Acetic Acid/Vinegar Bases: NaOH Cleaners, soap, Drano, and Hominy KOH Fertilizer Mg(OH)2 Stomach medicine, Milk of Magnesia Common Acids & Bases

  12. Common Acids & Bases

  13. pH scale The pH scale orders acids and bases.

  14. Great Resource: • Help and explanations can be found at http://www.school-for-champions.com/science/chemacids.htm

More Related