9/11 Mystery 5: Why do some things explode

What did the construction crew do to get the giant boulder out of the road?

• Blow it up into smaller pieces

• Roll it out of the way

• Use a crane to move it

• Use a truck to pull it out of the way

High explosives use things like what?

• vinegar

• gun powder

• dynomite

• baking soda

The alchemists tried to catch the bubbles to study them. After putting acid and baking soda into a flask they put in a cork. What happened when they did this?

• They were able to study the bubbles

• The flask shattered

• The cork got stuck

What happened in the ziploc bag of baking soda and vinegar?

• When the two things mixed, the bag filled with gas, so it looked really full

• Nothing happened

• We just saw the two substances mix, but nothing else happened

When you can't actually see or do an experiment to figure something out, what did the video suggest doing when you need help imagining what is happening?

• Think about it more in your head

• Ask someone to explain it to you

• Look it up in a book or online

• Make a model, like a drawing

What gas was produced in the experiment in the video?

• Carbon Dioxide

• Oxyden

• Nitrogen Dioxide

• Helium

Gasses are ALWAYS invidible

• True

• False

All explosions have one thing in common. There is a build up of __________. So much _______ that the container they're in bursts.

• Liquid

• Vinegar

• Explosives

• Gas