Apple Experiment and Chemical Reactions

Aaron from the St. Louis Science Center conducts an experiment to test methods of preventing apple browning by removing oxygen. He uses a candle and a baking soda-vinegar reaction to create oxygen-free environments and compares them to a control. After 7 hours, the results show minimal browning differences, prompting further experimentation.

What is the main cause of apple browning discussed in the video?

• High temperature

• Exposure to sunlight

• Moisture

• Oxygenation

Which method is used to consume oxygen in a container?

• Using a vacuum pump

• Freezing the container

• Adding salt

• Burning a candle

What gas is produced when baking soda and vinegar are combined?

• Hydrogen

• Nitrogen

• Oxygen

• Carbon dioxide

Why is aluminum foil used instead of plastic wrap in the experiment?

• It is easier to use

• Plastic wrap melts with a candle

• It is more environmentally friendly

• It is cheaper

What is the purpose of having a control in the experiment?

• To have a comparison point

• To increase the complexity

• To reduce the cost

• To make it more interesting

After 7 hours, how did the apple in the control container compare to the others?

• It was not brown at all

• It was much browner

• It was about the same

• It was less brown

Which setup seemed to result in slightly browner apples than the control?

• Both were the same

• Baking soda and vinegar

• Neither, the control was browner

• Burnt candle

What was the unexpected result of the experiment after 7 hours?

• All apples were completely brown

• None of the apples were as brown as expected

• The apples with vinegar were not brown at all

• The control apple was the least brown

What is suggested to do after observing the results of the experiment?

• Publish the results as they are

• Discard the experiment

• Repeat the experiment without changes

• Develop a new version of the experiment

How can viewers contribute to the experiment?

• By sharing the video

• By donating money

• By providing feedback and suggestions

• By sending their own apples