Exploring the Chemistry of Exploding Pumpkins

What is the main theme of the video?

• Easter egg hunts

• Halloween pumpkin explosions

• Christmas decorations

• Thanksgiving dinner

Which compound is used for the pumpkin explosions?

• Magnesium sulfate

• Potassium nitrate

• Calcium carbide

• Sodium chloride

What gas is produced when calcium carbide reacts with water?

• Methane

• Oxygen

• Carbon dioxide

• Acetylene

Why do some pumpkins show only a small amount of combustion?

• Too little calcium carbide

• Too little water

• Too much acetylene

• Too much oxygen

What is a sign of incomplete combustion in the pumpkins?

• Blue flames

• Black soot and smoke

• No smoke

• White smoke

What did miners use in the early 1900s to power their headlamps?

• Solar panels

• Kerosene lamps

• Carbide lamps

• Electric batteries

How was acetylene produced in miners' headlamps?

• By dripping water onto calcium carbide

• By burning coal

• By using electric sparks

• By mixing petrol with air

What is the purpose of the small valve in carbide lamps?

• To store acetylene

• To ignite the gas

• To control water flow

• To release oxygen

What should viewers do if they have ideas for next year's pumpkin explosions?

• Email the teacher

• Call the school

• Comment on the video

• Write a letter

What should viewers not forget to do at the end of the video?

• Turn off the video

• Write a review

• Like and subscribe

• Share with friends