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Praxis II General Science

Category - Chemistry

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Which of the following is a valid method for determining the identity of an unknown chemical?

Sniffing it,
Tasting it.
Rubbing it on your skin.
Mixing it with another chemical.
None of the above.

Explanation

Answer: E - None of these are valid methods for determining the identity of an unknown chemical. Mixing an unknown chemical with another chemical can be extremely dangerous, as some reactions are explosive or can react to produce noxious fumes.

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