Name ______________________________________________________ Period __________ Page ____________ Acids & Bases Webquest – Go to sites listed below and fill in information for each section. 1. Go to http://www.visionlearning.com/en/library/Chemistry/1/Acids-and-Bases/58 https://www.thoughtco.com/acids-and-bases-definitions-603664 Acids Taste ____________ Corrosive to ______________ Turn litmus paper ___________ Neutralize (become less acidic) when mixed with a ____________ Aqueous solutions ______________ electric ________________ (are _______________________) Examples: ___________________________________________________________________________ Bases Feel _____________ Turn litmus paper ______________ Taste _______________ Neutralize (become less basic) when mixed with an _____________ Aqueous solutions _______________ electric _______________ (are ________________________) Examples: ___________________________________________________________________________ Arrhenius - In the late 1800s, the Swedish scientist Svante Arrhenius proposed that ___________ can dissolve many compounds by separating them into their individual _____________. Arrhenius suggested that acids are compounds that contain ______________ and can dissolve in water to release _________________ ___________ into solution. + H2O→ ____________ + _____________ Arrhenius defined ____________ as substances that dissolve in water to release ___________________ ________ (OH-) into solution. HCl NaOH + H2O→ ______________ + ______________ The Arrhenius definition also explains that acids and bases counteract each other. This idea, that a base can make an acid weaker, and vice versa, is called ____________________________. The neutralization reaction of an acid with a base will always produce __________ and a ___________, as shown below: Acid Base Water Salt HCl + NaOH → _______ + _______ HBr + KOH → _______ + _______ pH - The acidity or basicity of something can be measured by its ______________________ _________ concentration. For example, a solution with [H+] = 1 x 10-7 moles/liter has a pH equal to ______. The pH scale ranges from _______ to ________. Substances with a pH between __________________ are acids. Substances with a pH __________________ are bases. Right in the middle, at pH = 7, are _____________________ substances, i.e., __________ _____________. Name ______________________________________________________ Period __________ Page ____________ 2. pH Scale: https://www.thoughtco.com/ph-of-common-chemicals-603666 Research this site and label the ACIDS side, the NEUTRAL POINT, and the BASES side. THEN, label three examples of acids on the scale, three examples of bases on the scale and one example of something neutral on the scale. 3. Take Quiz 1: https://www.thoughtco.com/acids-and-bases-quiz-4045347 Score: ______________________ List two things you missed: 4. Take Quiz 2: https://www.thoughtco.com/ph-of-household-products-quiz-4061538 Score: __________________ List two things you missed: 5. Watch Tyler Dewitt and take notes over NAMING ACIDS: https://www.youtube.com/watch?v=5Jb2u9ihfm4 (13 min) Acids WITHOUT oxygen: Acids WITH oxygen: 2 exceptions:
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