ACIDS /BASES AROUND THE HOUSE

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Presentation transcript:

ACIDS /BASES AROUND THE HOUSE Friday May 01st, 2015

Acids and bases have characteristic properties Learning Objectives: Chemicals (including common household products) can be acids, bases, or neutral Acids and bases have characteristic properties When acids and bases combine they neutralize each other Scientists can use pH indicators to identify chemicals as acidic, basic or neutral. Scientists measure the relative strength of acids and bases using the pH scale 2/22/2019 Anura Hewagama

Safety Clorox: Effects of Acute Exposure to Material: May cause severe irritation or damage (burns) to eyes, skin, gastrointestinal tract, and respiratory tract. Harmful if swallowed. You are using a diluted solution of Clorox. Flush with water for any skin contacts Ammonia cleaning solutions: 5-10% ammonia mixed with water. Low concentrations of ammonia found in household ammonia-strength cleaning solutions, are not harmful to healthy people. Precautions should be taken to avoid excessive inhalation or splashing. DO NOT MIX AMMONIA SOLUTION AND CLOROX. Cl2 gas produced can be harmful. 2/22/2019 Anura Hewagama

pH vs Color –Universal Indicator 2/22/2019 Anura Hewagama

Experimental Setup HCl HCl NaOH NaOH H2O H2O Plate 2 – Food/Drinks, Medicine Plate 1 – Cleaning reagents 2/22/2019 Anura Hewagama

2/22/2019 Anura Hewagama

Make sure to email the photographs of well plates showing the color produced. (ahewagam@emich.edu) or you could just show me the photo on your phone. 2/22/2019 Anura Hewagama