The Chemistry of Baking

What is a common activity that demonstrates the principles of chemistry?

• Swimming

• Baking

• Jogging

• Reading

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What is a mixture?

• A type of chemical reaction

• A single substance

• A combination of two or more different reactants or ingredients

• A solid form of a liquid

What cannot be reversed back to its original form once it undergoes a chemical change?

• Salt

• Burned wood

• Water

• Sugar

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NGSS.MS-PS1-2

When you take the cake out of the oven, what is an indication that the cake has gone through a chemical change?

• The cake is light and fluffy

• the cake is chocolate

• The cake is golden brown

• the cake is delicious

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What does a burning match is an example of an exothermic reaction because it releases?

• Water

• Oxygen

• Nitrogen

• Light and heat

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What causes the chemical change when baking a cake?

• Drying

• Thermal Energy (heat)

• Freezing

• Mixing

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What evidence indicates a chemical change has taken place when baking a cake?

• The cake rises

• the cake changes color

• The cake cools down

• The cake hardens

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What gas is released during the baking of a cake?

• Hydrogen

• Oxygen

• Nitrogen

• Carbon dioxide

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Why can't we reverse the cake back into its batter form?

• Because it's too delicious

• Because a physical change has taken place so it will make a big mess

• Because it's too hard

• Because a chemical change has taken place and has created a brand new substance

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What happens to the color of the cake batter after baking that indicates that a chemical change has taken place?

• It turns red

• It turns blue

• It remains yellow

• It turns golden brown

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