Bill Nye: Chemical Reactions Video Questions

What are chemical reactions?

• The process of combining chemicals to form new substances

• The process of separating chemicals into their individual elements

• The process of heating chemicals to release energy

• The process of cooling chemicals to create new compounds

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What happens when chemicals react with each other?

• They become inert

• They evaporate

• They form new chemicals

• They change color

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Which of the following is an example of a chemical reaction?

• Metal rusting

• Glass breaking

• Water boiling

• Ice melting

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What is the chemical formula for water?

• C6H12O6

• H2O

• CO2

• NaCl

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What happens when electricity is run through water?

• Water freezes

• Hydrogen and oxygen are separated

• Water changes color

• Water turns into steam

What causes iron to rust?

• Oxygen in the air

• Carbon dioxide in the air

• Hydrogen in the air

• Nitrogen in the air

What is the purpose of running electrons through steel wool?

• To make it glow orange

• To make it rust faster

• To create a chemical reaction with oxygen

• To separate the iron from the steel

What happens when hydrogen and oxygen recombine?

• Water is formed

• Fire is created

• Explosion occurs

• Energy is released

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What is the purpose of a fire extinguisher?

• To create a chemical reaction

• To put out fires by releasing carbon dioxide

• To release oxygen

• To separate hydrogen and oxygen

What happens when you mix vinegar and baking soda?

• Fire is created

• Water is formed

• Carbon dioxide gas is released

• Explosion occurs

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