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Your Safer Source for Science
ACIDS & BASES, continued
“Chem”-eleon Indicators— Science and Art with Acids and Bases—Student Laboratory Kit Watch paper chameleons magically change color with the help of some basic—and acidic—chemistry. Students spot solu-
tions of various household substances
on specially treated blotting paper, then estimate the pH of each by the color produced. Creativity flows as students then combine their scientific and artistic skills to make unique, colorful “chem”-eleons. A great integrated learning activity! Includes one acid and one base solution, five red cabbage indicator color charts, complete instructions with reproducible student handouts, valuable Teacher Notes and enough materials to make 30 chameleons. AP7018 | $36.30
Engage with POGILTM!
Flinn pH Meter
Large easy-to-read display with a slim design easily fits into test tubes. Can be immersed to a depth of 80 mm. Store the electrode with a few drops of pH 7 buffer or tap water. Range of 0.00–14.00 pH with accuracy better than ±0.2 pH and 1-point calibra- tion. 3,000 hours of battery life.
Disappearing Rainbow—Chemical Demonstration Kit
Your students will love this colorful demonstration that is always a teacher favorite at science conventions. A colorless solution is added to each of six seemingly empty beakers. A second colorless solution is then added and each of the six resulting solutions turns a different color
of the rainbow. Add more of the first solution and the rainbow of colors disappears. Challenge your students to explain these amazing observations. The secret is the small amount of indicator or mixture of indicators placed in each beaker before the demonstration. The first solution is hydrochloric acid which keeps the indicators colorless. The second solution is sodium hydroxide which raises the pH and activates the indicators causing a spectrum of color to appear.
AP8979 | $41.65
Flinn’s Exploring ChemistryTM—
Acids and Bases Package
Explore the principles, properties and appli- cations of acid–base chemistry with five coordinated—and colorful—activities that include two demonstrations, a lab experi- ment and two POGILTM activities provide a well-rounded approach for student success. Includes chemicals, specialized materials and complete instructions as well as free online video resources for three classes of 30 students working in pairs.
AP7693 | $80.00
AP8673 | pH Meter
AP7215 | Replacement Electrode | $21.80 AP8714 | Battery, 1.5 V | $3.45
Buffer Set for pH Meter Calibration
AP1300 | $29.85
| $51.10
ACIDS & BASES
I FLINN SCIENTIFIC 15