How Might You Tell Whether or Not Your Toothpaste Contained

question 59

Multiple Choice

How might you tell whether or not your toothpaste contained either calcium carbonate, CaC , or baking soda, NaHC , 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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Definitions:

Obsessions

Persistent, unwanted thoughts that cause distress or anxiety.

Hallucinations

Conscious awareness of sensing something that isn't externally present, giving the impression of reality.

Compulsions

Repetitive behaviors or mental acts that a person feels driven to perform in response to an obsession or according to rules that must be rigidly applied.

DSM I

The first edition of the Diagnostic and Statistical Manual of Mental Disorders, published by the American Psychiatric Association to standardize psychiatric diagnostic criteria.