How Might You Tell Whether or Not Your Toothpaste Contained $\mathrm { O } _ { 3 }$

question 64

Multiple Choice

How might you tell whether or not your toothpaste contained either calcium carbonate,CaC $\mathrm { O } _ { 3 }$ ,or baking soda,NaHC $\mathrm { O } _ { 3 }$ ,without looking at the ingredients label?

• A)if the toothpaste bubbles when heated
• B)if the toothpaste bubbles when added to ammonia,such as window cleaner
• C)if the toothpaste produces a salt (NaCl)when added to HCl
• D)if the toothpaste bubbles when added to vinegar

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