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

2. 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

3. 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

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

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

6. 2/22/2019
Anura Hewagama

7. Make sure to the photographs of well plates showing the color produced. or you could just show me the photo on your phone.
2/22/2019
Anura Hewagama