Baking Soda and Baking Powder Reactions

1. According to the article, what is the active ingredient in both baking soda and baking powder?

• Citric acid
• Sodium chloride
• Sodium bicarbonate
• Cream of tartar

2. What gas is released when baking soda reacts, causing baked goods to rise?

• Oxygen (O₂)
• Hydrogen (H₂)
• Carbon dioxide (CO₂)
• Nitrogen (N₂)

3. The article describes two main triggers for the reaction of sodium bicarbonate. What are they?

• Heat and acid
• Cold and mixing
• Pressure and light
• Moisture and stirring

4. What type of chemical reaction occurs when sodium bicarbonate is heated?

• Acid-base reaction
• Neutralization reaction
• Combustion reaction
• Thermal decomposition reaction

Tags

NGSS.MS-PS1-4

5. According to the article, at approximately what minimum temperature does the thermal decomposition of sodium bicarbonate occur?

• 50°C (122°F)
• 80°C (180°F)
• 150°C (302°F)
• 200°C (392°F)

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

6. What ratio of sodium bicarbonate to carbon dioxide is produced in the thermal decomposition reaction? (Hint: The article mentions "a molecule of CO₂ for every two molecules of sodium bicarbonate.")

• 1:1
• 1:2
• 2:1
• 2:2

Tags

NGSS.MS-PS1-5

7. What type of chemical reaction occurs when sodium bicarbonate reacts with an acid?

• Thermal decomposition reaction
• Redox reaction
• Acid-base reaction
• Synthesis reaction

8. According to the article, what is the stoichiometric ratio of sodium bicarbonate to carbon dioxide in the acid-base reaction? (Hint: The article mentions "a molecule of CO₂ is released in a 1:1 ratio with sodium bicarbonate.")

• 1:2
• 1:1
• 2:1
• It varies depending on the acid.

9. Why does the article suggest that an acid-base reaction is "preferred" for maximizing carbon dioxide production compared to thermal decomposition?

• It requires less heat.
• It produces carbon dioxide faster.
• It has a more efficient stoichiometric ratio of sodium bicarbonate to carbon dioxide.
• It doesn't produce any other byproducts.

10. What is the main chemical difference between baking soda and baking powder?

• Baking powder is pure sodium bicarbonate.
• Baking soda contains an added acid.
• Baking powder contains sodium bicarbonate and a powdered acid.
• Baking soda contains more sodium bicarbonate per volume.