Acid/Base Naming and Properties

Evaluation/Assessment: Objective: Today I will be able to: Differentiate between acids and bases based on differences in properties Construct a set of rules for naming acids Evaluation/Assessment: Informal assessment – monitoring student discussion of properties and construction of the rules for naming Formal assessment – analyzing student responses to the naming acids activity and exit ticket Common Core Connection Build Strong Content Knowledge Make sense of problem and persevere in solving them Reason abstractly and quantitatively

Lesson Sequence Evaluate: Warm-Up Engage and Explore: Brainstorming Activity: Acids vs. Bases Explain: Acids and Bases Properties Notes Explore: Naming Acids Inquiry Activity Explain and Elaborate: Naming Acids Notes Evaluate: Exit Ticket

Warm-Up What are some common household items that are acidic and/or basic?

Common Items

Examples of Household Items

Objective Today I will be able to: Differentiate between acids and bases based on differences in properties Define acid and bases based on the Arrhenius and Bronsted-Lowry definitions Calculate the pH and the pOH for a compound Construct a set of rules for naming acids

Homework Finish Naming Acids Activity

Agenda Warm-Up Brainstorming Activity: Acids vs. Bases Acids and Base Properties Notes Naming Acids Inquiry Activity Naming Acids Notes Exit Ticket

ACID AND BASE PROPERTIES NOTES

Acids vs. Bases Properties Tastes sour Feel rough Reacts vigorously with metals to produce H2 gas Indicators Turn blue litmus paper red Phenolphthalein is colorless Bases Tastes bitter Feel slippery Do not react with metals Indicators Turn red litmus paper blue Phenolphthalein is purple/pink

Similarities between Acids and Bases When dissolved in water, they are both electrolytes and create an electrical current Acids neutralize bases to produce salt and water

Complete the activity to construct a set of rules for naming acids NAMING ACIDS ACTIVITY Complete the activity to construct a set of rules for naming acids

NAMING ACIDS NOTES

Naming Acids The name usually comes from the anion

Naming Acids If the anion ends in –ide, the prefix begins with hydro- and the suffix changes to –ic Example: HCl Hydrogen chloride becomes Hydrochloric acid Example: HBr = Hydrobromic acid These are binary acids

Naming Acids Other acids take the name of their anion without the prefix hydro- The suffixes also change as follows –ate  -ic HNO3 = nitric acid H3PO4 = phosphoric acid –ite  -ous H3PO3 = Phosphorous acid

Exit Ticket Name the following bases NaOH NH3 LiOH KOH