Water Properties and Experiment Techniques

In this high school teacher demonstration video, the instructor shows how to add fresh warm water and warm salty water to a container using pipettes. The fresh warm water is dyed red, and the warm salty water is dyed green. The video emphasizes the technique of using a pipette by placing the tip at the edge of the glass to observe the mixing process.

What is the initial temperature of the water used in the experiment?

• 26.3 degrees Celsius

• 20.0 degrees Celsius

• 25.0 degrees Celsius

• 30.0 degrees Celsius

What color is the fresh warm water added to the glass?

• Yellow

• Green

• Blue

• Red

What tool is used to add the fresh warm water to the glass?

• Syringe

• Funnel

• Dropper

• Pipette

What is the color of the warm salty water added to the container?

• Yellow

• Blue

• Green

• Red

Where is the pipette tip placed when adding the warm salty water?

• Above the glass

• In the center of the glass

• At the bottom of the glass

• At the edge of the glass