Chemical Reaction Lab Experiment Questions

The video tutorial demonstrates a chemical reaction lab using water, road salt, and baking soda. The instructor measures the substances, combines them in a plastic sandwich bag, and uses a digital thermometer to record temperature changes. Upon mixing, a reaction occurs, producing gas and heat, which is observed through the bag's inflation and temperature increase.

What are the three substances used in the chemical reaction lab?

• Water, road salt, and sugar

• Water, road salt, and sand

• Water, road salt, and baking soda

• Water, baking soda, and vinegar

How much water is measured for the experiment?

• 10 milliliters

• 5 milliliters

• 15 milliliters

• 20 milliliters

What is the weight of road salt used in the experiment?

• 10 grams

• 8 grams

• 6 grams

• 4 grams

In which container is the water initially poured?

• A glass beaker

• A ceramic bowl

• A metal cup

• A small plastic container

What is the purpose of sealing the sandwich bag before mixing?

• To maintain the temperature

• To prevent evaporation

• To keep the substances from spilling

• To avoid contamination

What is the initial temperature of the substances before mixing?

• 65.5 degrees Fahrenheit

• 70.5 degrees Fahrenheit

• 60.5 degrees Fahrenheit

• 75.5 degrees Fahrenheit

What happens to the bag when the substances are mixed?

• It shrinks

• It fills with gas and becomes pillow-like

• It remains unchanged

• It deflates

What is the final temperature after the reaction?

• 76.5 degrees Fahrenheit

• 80.5 degrees Fahrenheit

• 86.5 degrees Fahrenheit

• 90.5 degrees Fahrenheit

What sound is heard during the reaction?

• A crackling sound

• A hissing sound

• A fizzing sound

• A popping sound

How does the bag feel to the touch after the reaction?

• Neutral

• Cold

• Sticky

• Warm