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Flinn Lab Activities and Demonstrations
1-800-452-1261
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Properties of Liquids and Solids— Laboratory Kits, continued
Solids and Liquids—Activity-Stations Kit
By: The Flinn Staff
The properties of solids and liquids provide a mirror for
us to “see inside” the world of atoms and molecules—to understand the motion of molecules and to compare the interactions among different types of molecules. In this activity-stations lab, students will investigate energy and phase transitions, the nature and strength of intermolecular attractive forces, and the relationship between the properties of a metal and its crystalline structure. Each activity focuses on a different aspect of the properties of solids and liquids. The result is a comprehensive lab activity for this important unit in the chemistry curriculum.
• Phase Change—Cooling Curve
• Intermolecular Forces
• Vaporization
• Properties of Metals
Four mini-lab activities are designed to take about 10 minutes to complete, with student groups rotating through the four stations. Teacher Notes with sample data, extensive background material, repro- ducible student handouts, and all chemicals and consumables needed to perform all the activities are supplied.
Complete for eight groups of students. Perform this experiment in a fume hood or well-ventilated lab.
Melting Point of a Pure Substance—
Introductory Student Laboratory Kit
By: The Flinn Staff
Melting point determination is one of the most common analytical tests used to identify unknown substances. In this introductory kit, students investigate the melting points of four non-toxic pure substances. Kit includes capillary melting point tubes, rubber bands, and the four pure compounds for investigation.
Complete for 24 students working in groups of two.
Boiling in a Syringe—Demonstration Kit
By: The Flinn Staff
Water always boils at 100 oC, right? Not always!
Water boils at 100 oC at 1 atmosphere of pressure. Every liquid boils at the temperature at which its vapor pressure equals the pressure above its surface. Change the pressure and the required boiling temperature changes! Explore both phase change and vapor pressure in this very dramatic demonstration. By decreasing the vapor pressure inside the syringe, hot water can be boiled at less than 100 oC. As the water boils, the vapor is pressurizing the area above the liquid. The water will continue to boil until the pressure equals that of the vapor pressure or until no liquid is left. Teacher Demonstration Notes, student handouts, and a detailed discussion section are included.
Concepts: Vapor pressure, boiling, phase change.
Time Required: 10 minutes
Materials Provided: Demonstration syringe (140-mL) and stopcock with Luer Lock adapter.
See free video at flinnsci.com.
PROPERTIES OF LIQUIDS AND SOLIDS—DEMONSTRATION KITS continued on next page.
Solids and Liquids—Activity-Stations Kit AP7285
Catalog No.
Description
Price/Each
AP7285
Solids and Liquids—Activity-Stations Kit
$80.00
Melting Point of a Pure Substance— Introductory Student Laboratory Kit AP9114
Catalog No.
Description
Price/Each
AP9114
Melting Point of a Pure Substance— Introductory Student Laboratory Kit
$37.40
Properties of Liquids and Solids— Demonstration Kits
Boiling in a Syringe— Demonstration Model AP7448
Catalog No.
Description
Price/Each
AP7448
Boiling in a Syringe—Demonstration Kit
$20.35