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Periodic Table and Trends
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Periodic Table and Trends— Laboratory Kits, continued
Periodic Table Chart—
Super Value Laboratory Kit
By: Tim Schaap, Elk Grove H.S., Elk Grove Village, IL
Actively teach your students the periodic table by having them do this unique hands-on activity. The students will develop their own periodic table by arranging nine unnamed elements according to their periodic properties. The students have to decide which properties (mass, oxida- tion state, boiling point, etc.) are periodic. Includes 15 sets of element cards, master data and instruction sheets, and instructor’s guide.
Super Value Kit is complete for 15 groups of students. All materials are reusable.
Periodic Trends and the Properties of Elements— General, Organic and Biological Chemistry Experiment See page 7.
Plotting Trends—A Periodic Table
Student Laboratory Kit
By: The Flinn Staff
Help students visualize trends in the properties of the elements! Does ionization energy increase going up or down a column in the periodic table? Do atoms get smaller or larger from right to left across a row? Most students have a hard time answering these questions, since they cannot see or feel the quantities involved. Visualizing trends from only numerical data is almost impossible. In this cooperative lab activity, students use reaction plates and plastic straws to build three-dimen- sional charts of element properties. As students examine their models, they will clearly identify periodic trends. Let students discover for themselves the existence, direction, and meaning of periodic trends. Includes reproducible student handouts, background information, and complete Instructor’s Notes with sample data and charts.
Complete for 24 students working in groups of four. Reaction plates are reusable from year to year. The only consumable items are the straws. Metric rulers are recommended and available separately.
Periodic Table and Trends—Demonstration Kits
All in the Family—Periodic Trends
Demonstration Kit
In every family there are similarities and differences.
The same is true in chemical families as well! Explore
similarities and differences in the reactivity of the halogens and promote critical thinking with this inquiry-based demonstration. Dilute aqueous solutions of chlorine, bromine, and iodine are prepared fresh and mixed pair-wise with chloride, bromide or iodide ions in a two-phase solvent system. Rank the halogens from most active to least active and discover the periodic trend in their reactivity based on observed color changes across the liquid layers. Small-scale yet effective demonstration has been optimized to minimize halogen concentrations and increase safety. Concepts: Halogens, periodic table, groups or families.
Time Required: 20 minutes
Materials Provided: Hexane, hydrochloric acid, iodine solution, sodium bromide, sodium chloride, sodium hypochlorite and sodium iodide solutions, square glass bottles, and caps.
Notes: Halogen solutions should be worked with in a fume hood or well-ventilated lab.
See free video at flinnsci.com.
Periodic Table Chart—Super Value Laboratory Kit AP8675
Catalog No.
Description
Price/Each
AP8675
Periodic Table Chart—Super Value Laboratory Kit
$15.40
Catalog No.
Description
Price/Each
AP6290
Plotting Trends—A Periodic Table Student Laboratory Kit
$36.45
AP6025
Straws, Plastic, Wrapped
11.55
AP4685
Ruler, Metric/English, Transparent
1.20
Plotting Trends—A Periodic Table Student Laboratory Kit AP6290
All in the Family—Periodic Trends Demonstration Kit AP7281
Catalog No.
Description
Price/Each
AP7281
All in the Family—Periodic Trends Demonstration Kit
$51.70
PERIODIC TABLE AND TRENDS—DEMONSTRATION KITS continued on next page.